Isaiah 6:5

⁸But Simon Peter, when he saw it, fell down at Jesus’ knees, saying, “Depart from me, for I am a sinful man, Lord.” ⁹For he was amazed, and all who were with him, at the catch of fish which they had caught;

⁶And the tongue is a fire. The world of iniquity among our members is the tongue, which defiles the whole body, and sets on fire the course of nature, and is set on fire by Gehenna.^7[+] For every kind of animal, bird, creeping thing, and sea creature is tamed, and has been tamed by mankind; ⁸but nobody can tame the tongue. It is a restless evil, full of deadly poison. ⁹With it we bless our God and Father, and with it we curse men who are made in the image of God. ¹⁰Out of the same mouth comes blessing and cursing. My brothers, these things ought not to be so.

³“They bend their tongue, as their bow, for falsehood. They have grown strong in the land, but not for truth; for they proceed from evil to evil, and they don’t know me,” says the LORD. ⁴“Everyone beware of his neighbor, and don’t trust in any brother; for every brother will utterly supplant, and every neighbor will go around like a slanderer. ⁵Friends deceive each other, and will not speak the truth. They have taught their tongue to speak lies. They weary themselves committing iniquity. ⁶Your habitation is in the middle of deceit. Through deceit, they refuse to know me,” says the LORD.

⁷Therefore the LORD of Armies says, “Behold, I will melt them and test them; for how should I deal with the daughter of my people? ⁸Their tongue is a deadly arrow. It speaks deceit. One speaks peaceably to his neighbor with his mouth, but in his heart, he waits to ambush him.

⁶Then I said, “Ah, Lord^[+] GOD! Behold, ^[+] I don’t know how to speak; for I am a child.”

³⁴You offspring of vipers, how can you, being evil, speak good things? For out of the abundance of the heart, the mouth speaks. ³⁵The good man out of his good treasure^[+] brings out good things, and the evil man out of his evil treasure brings out evil things. ³⁶I tell you that every idle word that men speak, they will give account of it in the day of judgment. ³⁷For by your words you will be justified, and by your words you will be condemned.”

³⁰Moses said before the LORD, “Behold, I am of uncircumcised lips, and how shall Pharaoh listen to me?”

⁶You, son of man, don’t be afraid of them, neither be afraid of their words, though briers and thorns are with you, and you dwell among scorpions. Don’t be afraid of their words, nor be dismayed at their looks, though they are a rebellious house. ⁷You shall speak my words to them, whether they will hear or whether they will refuse; for they are most rebellious. ⁸But you, son of man, hear what I tell you. Don’t be rebellious like that rebellious house. Open your mouth, and eat that which I give you.”

¹⁰Moses said to the LORD, “O Lord,^[+] I am not eloquent, neither before now, nor since you have spoken to your servant; for I am slow of speech, and of a slow tongue.”

¹³The Lord said, “Because this people draws near with their mouth and honors me with their lips, but they have removed their heart far from me, and their fear of me is a commandment of men which has been taught;

³¹They come to you as the people come, and they sit before you as my people, and they hear your words, but don’t do them; for with their mouth they show much love, but their heart goes after their gain.