Deuteronomy 29:15-20

15but with whoever is standing here with us today before the LORD our God, and with whoever is not here with us today. 16“You know how we lived in the land of Egypt, and how we came through the midst of the nations through which you passed. 17And you have seen their detestable things, their idols of wood and stone, of silver and gold, which were among them. 18Beware lest there be among you a man or woman or clan or tribe whose heart is turning away today from the LORD our God to go and serve the gods of those nations. Beware lest there be among you a root bearing poisonous and bitter fruit, 19one who, when he hears the words of this sworn covenant, blesses himself in his heart, saying, ‘I shall be safe, though I walk in the stubbornness of my heart.’ This will lead to the sweeping away of moist and dry alike. 20The LORD will not be willing to forgive him, but rather the anger of the LORD and his jealousy will smoke against that man, and the curses written in this book will settle upon him, and the LORD will blot out his name from under heaven.