Jer 9:8 Their tongue is like an arrow shot out; it speaks deceit: one speaks peaceably to his neighbor with his mouth, but in heart he lies in wait.
Jer 18:18 Then they said, Come, and let us devise plans against Jeremiah; for the law shall not perish from the priest, nor counsel from the wise, nor the word from the prophet. Come, and let us strike him with the tongue, and let us not give heed to any of his words.
Pro 6:2 You are snared with the words of your mouth, you are taken with the words of your mouth.
Pro 12:13-14 The wicked is snared by the transgression of his lips: but the just shall come out of trouble. 14 A man shall be satisfied with good by the fruit of his mouth: and the recompense of a man’s hands shall be returned to him.
Num 13:32 And they brought up an evil report of the land which they had searched to the children of Israel, saying, The land, through which we have gone to search it, is a land that eats up the inhabitants thereof; and all the people that we saw in it are men of a great stature.
1Pe 3:10 For he that will love life, and see good days, let him keep his tongue from evil, and his lips that they speak no guile:
Jam 3:5-6 Even so the tongue is a little member, and boasts great things. Behold, how great a matter a little fire kindles! 6 And the tongue is a fire, a world of iniquity; so is the tongue among our members, that it defiles the whole body, and sets on fire the course of nature; and it is set on fire by hell.
Mat 12:35-37 The good person from his good treasury brings out good [things], and the evil person from his evil treasury brings out evil [things]. 36 But I tell you that every worthless word that they speak, people will give an account for it on the day of judgment! 37 For by your words you will be vindicated, and by your words you will be condemned.”
Luk 6:45 45 A good man out of the good treasure of his heart brings forth that which is good; and an evil man out of the evil c treasure of his heart brings forth that which is evil: for of the abundance of the heart his mouth speaks.