Deuteronomy 29:18
Lest there should be among you a man, or woman, or family, or tribe, whose heart turns away this day from the LORD our God, to go and serve the gods of these nations; lest there should be among you a root that bears bitterness or wormwood;
Hebrews 12:15
Looking diligently lest any man fall short of the grace of God; lest any root of bitterness springing up trouble you, and thereby many be defiled;
Deuteronomy 11:16-17
Take heed to yourselves, that your heart be not deceived, and you turn aside, and serve other gods, and worship them;
Deuteronomy 13:1-15
If there arise among you a prophet, or a dreamer of dreams, and gives you a sign or a wonder,
Deuteronomy 17:2-7
If there be found among you, within any of your gates which the LORD your God gives you, man or woman, that has done wickedness in the sight of the LORD your God, in transgressing his covenant,
Jeremiah 9:15
Therefore thus says the LORD of hosts, the God of Israel; Behold, I will feed them, even this people, with wormwood, and give them water poisonous to drink.
Hosea 10:4
They have spoken words, swearing falsely in making a covenant: thus judgment springs up like hemlock in the furrows of the field.
Amos 6:12
Shall horses run upon the rock? will one plow there with oxen? for you have turned justice into gall, and the fruit of righteousness into hemlock:
Acts 8:23
For I perceive that you are in the gall of bitterness, and in the bond of iniquity.
Hebrews 3:12
Take heed, brethren, lest there be in any of you an evil heart of unbelief, in departing from the living God.