2 Chronicles 17:4

For the first time, the Chronicler compares Judah's practices with those of northern Israel. He shows awareness that the Baal cult from Tyre had been introduced into northern worship (see 1 Kings 16:31–32).

and not after the doings of Israel--He observed with scrupulous fidelity, and employed his royal influence to support the divine institutions as enacted by Moses, abhorring that spurious and unlawful calf-worship that now formed the established religion in Israel. Being thus far removed, alike from gross idolatry and Israelitish apostasy, and adhering zealously to the requirements of the divine law, the blessing of God rested on his government. Ruling in the fear of God, and for the good of his subjects, "the Lord established the kingdom in his hand."

Here we find concerning Jehoshaphat,
I. What a wise man he was. As soon as he came to the crown he strengthened himself against Israel, Ch2 17:1. Ahab, an active warlike prince, had now been three years upon the throne of Israel, the vigour of his beginning falling in with the decay of Asa's conclusion. It is probable that the kingdom of Israel had, of late, got ground of the kingdom of Judah and began to grow formidable to it; so that the first thing Jehoshaphat had to do was to make his part good on that side, and to check the growing greatness of the king of Israel, which he did so effectually, and without bloodshed, that Ahab soon courted his alliance, so far was he from giving him any disturbance, and proved more dangerous as a friend than he could have been as an enemy. Jehoshaphat strengthened himself not to act offensively against Israel or invade them, but only to maintain his own, which he did by fortifying the cities that were on his frontiers, and putting garrisons, stronger than had been, in the cities of Ephraim, which he was master of, Ch2 17:2. He did not strengthen himself, as his father did, by a league with the king of Syria, but by fair and regular methods, on which he might expect the blessing of God and in which he trusted God.
II. What a good man he was. It is an excellent character that is here given him. 1. He walked in the ways of his father David. In the characters of the kings, David's ways are often made the standard, as Kg1 15:3, Kg1 15:11; Kg2 14:3; Kg2 16:2; Kg2 18:3. But the distinction is nowhere so strongly marked as here between his first ways and his last ways; for the last were not so good as the first. his ways, before he fell so foully in the matter of Uriah (which is mentioned long afterwards as the bar in his escutcheon, Kg1 15:5), were good ways, and, though he happily recovered from that fall, yet perhaps he never, while he lived, fully retrieved the spiritual strength and comfort he lost by it. Jehoshaphat followed David as far as he followed God and no further. Paul himself thus limits our imitation of him (Co1 11:1): Follow me, as I follow Christ, and not otherwise. Many good people have had their first ways, which were their best ways, their first love, which was their strongest love; and in every copy we propose to write after, as we must single out that only which is good, so that chiefly which is best. The words here will admit another reading; they run thus: He walked in the ways of David his father (Hareshonim), those first ways, or those ancient ways. He proposed to himself, for his example, the primitive times of the royal family, those purest times, before the corruptions of the late reigns came in. See Jer 6:16. The Septuagint leaves out David, and so refers it to Asa: He walked in the first ways of his father, and did not imitate him in what was amiss in him, towards the latter end of his time. It is good to be cautious in following the best men, lest we step aside after them. 2. He sought not to Baalim, but sought to the Lord God of his father, Ch2 17:3, Ch2 17:4. The neighbouring nations had their Baalim, one had one Baal and another had another; but he abhorred them all, had nothing to do with them. he worshipped the Lord God of his father and him only, prayed to him only and enquired of him only; both are included in seeking him. 3. That he walked in God's commandments, not only worshipped the true God, but worshipped him according to his own institution, and not after the doings of Israel, Ch2 17:4. Though the king of Israel was his neighbour and ally, yet he did not learn his way. Whatever dealings he had with him in civil matters, he would not have communion with him, nor comply with him in his religion. In this he kept close to the rule. 4. His heart was lifted up in the ways of the Lord (Ch2 17:6), or he lifted up his heart. He brought his heart to his work, and lifted up his heart in it; that is, he had a sincere regard to God in it. Unto thee, O Lord! do I lift up my soul. His heart was enlarged in that which is good, Psa 119:32. He never thought he could do enough for God. He was lively and affectionate in his religion, fervent in spirit, serving the Lord, cheerful and pleasant in it; he went on in his work with alacrity, as Jacob, who, after his vision of God at Bethel, lifted up his feet, Gen 29:1, margin. He was bold and resolute in the ways of God and went on with courage. His heart was lifted up above the consideration of the difficulties that were in the way of his duty; he easily got over them all, and was not frightened with winds and clouds from sowing and reaping, Ecc 11:4. Let us walk in the same spirit.
III. What a useful man he was, not only a good man, but a good king. He not only was good himself, but did good in his generation, did a great deal of good. 1. He took away the teachers of lies, so images are called (Hab 2:18), the high places and the groves, Ch2 17:6. It is meant of those in which idols were worshipped; for those that were dedicated to the true God only were not taken away, Ch2 20:33. It was only idolatry that he abolished. Nothing debauched the nation more than those idolatrous groves or images which he took away. 2. He sent forth teachers of truth. When he enquired into the state of religion in his kingdom he found his people generally very ignorant: they knew not that they did evil. Even in the last good reign there had been little care taken to instruct them in their duty; and therefore Jehoshaphat resolves to begin his work at the right end, deals with them as reasonable creatures, will not lead them blindfold, no, not into a reformation, but endeavours to have them well taught, knowing that that was the way to have them well cured. In this good work he employed, (1.) His princes. Those about him he sent forth; those in the country he sent to teach in the cities of Judah, Ch2 20:7. He ordered them, in the administration of justice, not only to correct the people when they did ill, but to teach them how to do better, and to give a reason for what they did, that the people might be informed of the difference between good and evil. The princes or judges upon the bench have a great opportunity of teaching people their duty to God and man, and it is not out of their province, for the laws of God are to be looked upon as laws of the land. (2.) The Levites and priests went with the princes, and taught in Judah, having the book of the law with them, Ch2 17:8, Ch2 17:9. They were teachers by office, Deu 33:10. Teaching was part of the work for which they had their maintenance. The priests and the Levites had little else to do. But, it seems, they had neglected it, pretending perhaps that they could not get the people to hear them. "Well," says Jehoshaphat, "you shall go along with the princes, and they with their authority shall oblige the people to come and hear you; and then, if they be not well instructed, it is your fault." What an abundance of good may be done when Moses and Aaron thus go hand in hand in the doing of it, when princes with their power, and priests and Levites with their scripture learning, agree to teach the people the good knowledge of God and their duty! These itinerant judges and itinerant preachers together were instrumental to diffuse a blessed light throughout the cities of Judah. But it is said, They had the book of the law of the Lord with them. [1.] For their own direction, that thence they might fetch all the instructions they gave to the people, and not teach for doctrines the commandments of men. [2.] For the conviction of the people, that they might see that they had a divine warrant for what they said and delivered to them that only which they received from the Lord. Note, Ministers, when they go to teach the people, should have their Bibles with them.
IV. What a happy man he was. 1. How happy he was in the favour of his God, who signally owned and blessed him: The Lord was with him (Ch2 17:3); the word of the Lord was his helper (so the Chaldee paraphrase); the Lord established the kingdom in his hand, Ch2 17:5. Those stand firmly that have the presence of God with them. If the beauty of the Lord our God be upon us, that will establish the work of our hands and establish us in our integrity. 2. How happy he was in the affections of his people (Ch2 17:5): All Judah brought him presents, in acknowledgment of his kindness in sending preachers among them. The more there is of true religion among a people the more there will be of conscientious loyalty. A government that answers the end of government will be supported. The effect of the favour both of God and his kingdom was that he had riches and honour in abundance. It is undoubtedly true, though few will believe it, that religion and piety are the best friends to outward prosperity. And, observe, it follows immediately, His heart was lifted up in the ways of the Lord. Riches and honour in abundance prove to many a clog and a hindrance in the ways of the Lord, an occasion of pride, security, and sensuality; but they had a quite contrary effect upon Jehoshaphat: his abundance was oil to the wheels of his obedience, and the more he had of the wealth of this world the more was his heart lifted up in the ways of the Lord.

The Lord was with Jehoshaphat - "The Word of the Lord was Jehoshaphat's Helper." - Targum.

But sought to the Lord God of his fathers,.... Prayed to him, worshipped and served him:

and walked in his commandments; observed and kept them, moral, ceremonial, and judicial:

and not after the doings of Israel: who worshipped the golden calves at Dan and Bethel.

i.e. Their worship of the calves, or other idols.