Genesis 7:3

Of every clean beast . . . fowls--Pairs of every species of animals, except the tenants of the deep, were to be taken for the preservation of their respective kinds. This was the general rule of admission, only with regard to those animals which are styled "clean," three pairs were to be taken, whether of beasts or birds; and the reason was that their rapid multiplication was a matter of the highest importance, when the earth should be renovated, for their utility either as articles of food or as employed in the service of man. But what was the use of the seventh? It was manifestly reserved for sacrifice; and so that both during Noah's residence in the ark, and after his return to dry land, provision was made for celebrating the rites of worship according to the religion of fallen man. He did not, like many, leave religion behind. He provided for it during his protracted voyage.

Here is, I. A gracious invitation of Noah and his family into a place of safety, now that the flood of waters was coming, Gen 7:1.
1. The call itself is very kind, like that of a tender father to his children, to come in doors, when he sees night or a storm coming: Come thou, and all thy house, that small family that thou hast, into the ark. Observe, (1.) Noah did not go into the ark till God bade him; though he knew it was designed for his place of refuge, yet he waited for a renewed command, and had it. It is very comfortable to follow the calls of Providence, and to see God going before us in every step we take. (2.) God does not bid him go into the ark, but come into it, implying that God would go with him, would lead him into it, accompany him in it, and in due time bring him safely out of it. Note, Wherever we are, it is very desirable to have the presence of God with us, for this is all in all to the comfort of every condition. It was this that made Noah's ark, which was a prison, to be to him not only a refuge, but a palace. (3.) Noah had taken a great deal of pains to build the ark, and now he was himself preserved alive in it. Note, What we do in obedience to the command of God, and in faith, we ourselves shall certainly have the comfort of, first or last. (4.) Not he only, but his house also, his wife and children, are called with him into the ark. Note, It is good to belong to the family of a godly man; it is safe and comfortable to dwell under such a shadow. One of Noah's sons was Ham, who proved afterwards a bad man, yet he was saved in the ark, which intimates, [1.] That wicked children often fare the better for the sake of their godly parents. [2.] That there is a mixture of bad with good in the best societies in earth, and we are not to think it strange. In Noah's family there was a Ham, and in Christ's family there was a Judas. There is no perfect purity on this side heaven. (5.) This call to Noah was a type of the call which the gospel gives to poor sinners. Christ is an ark already prepared, in whom alone we can be safe when death and judgment come. Now the burden of the song is, "Come, come;" the word says, "Come;" ministers say, "Come;" the Spirit says, "Come, come into the ark."
2. The reason for this invitation is a very honourable testimony to Noah's integrity: For thee have I seen righteous before me in this generation. Observe, (1.) Those are righteous indeed that are righteous before God, that have not only the form of godliness by which they appear righteous before men, who may easily be imposed upon, but the power of it by which they approve themselves to God, who searches the heart, and cannot be deceived in men's characters. (2.) God takes notice of and is pleased with those that are righteous before him: Thee have I seen. In a world of wicked people God could see one righteous Noah; that single grain of wheat could not be lost, no, not in so great a heap of chaff. The Lord knows those that are his. (3.) God, that is a witness to, will shortly be a witness for, his people's integrity; he that sees it will proclaim it before angels and men, to their immortal honour. Those that obtain mercy to be righteous shall obtain witness that they are righteous. (4.) God is, in a special manner, pleased with those that are good in bad times and places. Noah was therefore illustriously righteous, because he was so in that wicked and adulterous generation. (5.) Those that keep themselves pure in times of common iniquity God will keep safe in times of common calamity; those that partake not with others in their sins shall not partake with them in their plagues; those that are better than others are, even in this life, safer than others, and it is better with them.
II. Here are necessary orders given concerning the brute-creatures that were to be preserved alive with Noah in the ark, Gen 7:2, Gen 7:3. They were not capable of receiving the warning and directions themselves, as man was, who herein is taught more than the beasts of the earth, and made wiser than the fowls of heaven - that he is endued with the power of foresight; therefore man is charged with the care of them: being under his dominion, they must be under his protection; and, though he could not secure every individual, yet he must carefully preserve every species, that no tribe, no, not the least considerable, might entirely perish out of the creation. Observe in this, 1. God's care for man, for his comfort and benefit. We do not find that Noah was solicitous of himself about this matter; but God consults our happiness more than we do ourselves. Though God saw that the old world was very provoking, and foresaw that the new one would be little better, yet he would preserve the brute creatures for man's use. Doth God take care for oxen? Co1 9:9. Or was it not rather for man's sake that this care was taken? 2. Even the unclean beasts, which were least valuable and profitable, were preserved alive in the ark; for God's tender mercies are over all his works, and not over those only that are of most eminence and use. 3. Yet more of the clean were preserved than of the unclean. (1.) Because the clean were most for the service of man; and therefore, in favour to him, more of them were preserved and are still propagated. Thanks be to God, there are not herds of lions as there are of oxen, nor flocks of tigers as there are of sheep. (2.) Because the clean were for sacrifice to God; and therefore, in honour to him, more of them were preserved, three couple for breed, and the odd seventh for sacrifice, Gen 8:20. God gives us six for one in earthly things, as in the distribution of the days of the week, that in spiritual things we should be all for him. What is devoted to God's honour, and used in his service, is particularly blessed and increased.
III. Here is notice given of the now imminent approach of the flood: Yet seven days, and I will cause it to rain, Gen 8:4. 1. "It shall be seven days yet, before I do it." After the hundred and twenty years had expired, God grants them a reprieve of seven days longer, both to show how slow he is to anger and that punishing work is his strange work, and also to give them some further space for repentance: but all in vain; these seven days were trifled away, after all the rest; they continued secure and sensual until the day that the flood came. 2. "It shall be but seven days." While Noah told them of the judgment at a distance, they were tempted to put off their repentance, because the vision was for a great while to come; but now he is ordered to tell them that it is at the door, that they have but one week more to turn them in, but one sabbath more to improve, to see if that will now, at last, awaken them to consider the things that belong to their peace, which otherwise will soon be hidden from their eyes. But it is common for those that have been careless of their souls during the years of their health, when they have looked upon death at a distance, to be as careless during the days, the seven days, of their sickness, when they see it approaching, their hearts being hardened by the deceitfulness of sin.

To keep seed alive upon the face of all the earth. That is, that hence offspring might be born. But this is referred to Noah; for although, properly speaking, God alone gives life, yet God here refers to those duties which he had enjoined upon his servant: and it is with respect to his appointed office, that God commands him to collect animals that he may keep seed alive. Nor is this extraordinary, seeing that the ministers of the gospel are said, in a sense, to confer spiritual life. In the clause which next follows, upon the face of all the earth, there is a twofold consolation: that the waters, after they had covered the earth for a time, would again cease, so that the dry surface of the earth should appear; and then, that not only should Noah himself survive, but, by the blessing of God, the number of animals should be so increased, as to spread far and wide through the whole world. Thus, in the midst of ruin, future restoration is promised to him. Moses is very earnest in showing that God took care, by every means, to retain Noah in obedience to his word, and that the holy man entirely acquiesced. This doctrine is very useful, especially when God either promises or threatens anything incredible, since men do not willingly receive what seems to them improbable. For nothing was less accordant with the judgment of the flesh, than that the world should be destroyed by its Creator; because this was to subvert the whole order of nature which he had established. Wherefore, unless Noah had been well admonished of this terrible judgment of God, he never would have ventured to believe it; lest he should conceive of God as acting in contradiction to himself. The word hyqvm (hayekom,) which Moses here uses has its origin from a word signifying to stand; but it properly means whatever lives and flourishes.

Of every clean beast - So we find the distinction between clean and unclean animals existed long before the Mosaic law. This distinction seems to have been originally designed to mark those animals which were proper for sacrifice and food, from those that were not. See Leviticus 11.

Of fowls also of the air by sevens, the male and his female,.... That is, of such as were clean; seven couple of these were to be brought into the ark, for the like use as of the clean beasts, and those under the law; and so at this time, and here meant were turtledoves, and young pigeons that were for sacrifice; and the rest were for food: and the design of bringing both into the ark was:

to keep seed alive upon the face of all the earth; that the species of creatures might be continued, both of beasts and birds, clean and unclean.

Of clean fowls, which he leaves to be understood out of the foregoing verse,

by sevens; and of the unclean, by two; as before of the beasts,

to keep seed alive, i.e. the issue or breed of them.

Gen 7:1-12
When the ark was built, and the period of grace (Gen 6:3) had passed, Noah received instructions from Jehovah to enter the ark with his family, and with the animals, viz., seven of every kind of clean animals, and two of the unclean; and was informed that within seven days God would cause it to rain upon the earth forty days and forty nights. The date of the flood is then given (Gen 7:6): "Noah was six hundred years old, and the flood was (namely) water upon the earth;" and the execution of the divine command is recorded in Gen 7:7-9. There follows next the account of the bursting forth of the flood, the date being given with still greater minuteness; and the entrance of the men and animals into the ark is again described as being fully accomplished (Gen 7:10-16). - The fact that in the command to enter the ark a distinction is now made between clean and unclean animals, seven of the former being ordered to be taken, - i.e., three pair and a single one, probably a male for sacrifice-is no more a proof of different authorship, or of the fusion of two accounts, than the interchange of the names Jehovah and Elohim. For the distinction between clean and unclean animals did not originate with Moses, but was confirmed by him as a long established custom, in harmony with the law. It reached back to the very earliest times, and arose from a certain innate feeling of the human mind, when undisturbed by unnatural and ungodly influences, which detects types of sin and corruption in many animals, and instinctively recoils from them (see my biblische Archeologie ii. p. 20). That the variations in the names of God furnish no criterion by which to detect different documents, is evident enough from the fact, that in Gen 7:1 it is Jehovah who commands Noah to enter the ark, and in Gen 7:4 Noah does as Elohim had commanded, whilst in Gen 7:16, in two successive clauses, Elohim alternates with Jehovah-the animals entering the ark at the command of Elohim, and Jehovah shutting Noah in. With regard to the entrance of the animals into the ark, it is worthy of notice, that in Gen 7:9 and Gen 7:15 it is stated that "they came two and two," and in Gen 7:16 that "the coming ones came male and female of all flesh." In this expression "they came" it is clearly intimated, that the animals collected about Noah and were taken into the ark, without his having to exert himself to collect them, and that they did so in consequence of an instinct produced by God, like that which frequently leads animals to scent and try to flee from dangers, of which man has no presentiment. The time when the flood commenced is said to have been the 600th year of Noah's life, on the 17th day of the second month (Gen 7:11). The months must be reckoned, not according to the Mosaic ecclesiastical year, which commenced in the spring, but according to the natural of civil year, which commenced in the autumn at the beginning of sowing time, or the autumnal equinox; so that the flood would be pouring upon the earth in October and November. "The same day were all the fountains of the great deep (תּהום the unfathomable ocean) broken up, and the sluices (windows, lattices) of heaven opened, and there was (happened, came) pouring rain (גּשׁם in distinction from טטר) upon the earth 40 days and 40 nights." Thus the flood was produced by the bursting forth of fountains hidden within the earth, which drove seas and rivers above their banks, and by rain which continued incessantly for 40 days and 40 nights.
Gen 7:13-16
"In the self-same day had Noah...entered into the ark:" בּא, pluperfect "had come," not came, which would require יבא. The idea is not that Noah, with his family and all the animals, entered the ark on the very day on which the rain began, but that on that day he had entered, had completed the entering, which occupied the seven days between the giving of the command (Gen 7:4) and the commencement of the flood (Gen 7:10).