Deuteronomy 29:18-20

29:18 Beware that the heart of no man, woman, clan, or tribe among you turns away from the Lord our God today to pursue and serve the gods of those nations; beware that there is among you no root producing poisonous and bitter fruit. 29:19 When such a person hears the words of this oath he secretly blesses himself and says, “I will have peace though I continue to walk with a stubborn spirit.” This will destroy the watered ground with the parched. 29:20 The Lord will be unwilling to forgive him, and his intense anger will rage against that man; all the curses written in this scroll will fall upon him and the Lord will obliterate his name from memory.

Deuteronomy 32:32-33

32:32 For their vine is from the stock of Sodom,

and from the fields of Gomorrah.

Their grapes contain venom,

their clusters of grapes are bitter.

32:33 Their wine is snakes’ poison,

the deadly venom of cobras.

Job 20:14

20:14 his food is turned sour in his stomach;

it becomes the venom of serpents within him.

Jeremiah 4:18

4:18 “The way you have lived and the things you have done

will bring this on you.

This is the punishment you deserve, and it will be painful indeed.

The pain will be so bad it will pierce your heart.”

Jeremiah 9:15

9:15 So then, listen to what I, the Lord God of Israel who rules over all, say. ‘I will make these people eat the bitter food of suffering and drink the poison water of judgment.

Lamentations 3:5

3:5 He has besieged and surrounded me

with bitter hardship.

Lamentations 3:19

ז (Zayin)

3:19 Remember my impoverished and homeless condition,

which is a bitter poison.

Hebrews 12:15

12:15 See to it that no one comes short of the grace of God, that no one be like a bitter root springing up and causing trouble, and through him many become defiled.