Deuteronomy 13:8

5 `And that prophet, or that dreamer of the dream, is put to death, for he hath spoken apostasy against Jehovah your God (who is bringing you out of the land of Egypt, and hath ransomed you out of a house of servants), to drive you out of the way in which Jehovah thy God hath commanded thee to walk, and thou hast put away the evil thing from thy midst.

6 `When thy brother--son of thy mother, or thy son, or thy daughter, or the wife of thy bosom, or thy friend who is as thine own soul--doth move thee, in secret, saying, Let us go and serve other gods--(which thou hast not known, thou and thy fathers,

7 of the gods of the peoples who are round about you, who are near unto thee, or who are far off from thee, from the end of the earth even unto the end of the earth) --

8 thou dost not consent to him, nor hearken unto him, nor doth thine eye have pity on him, nor dost thou spare, nor dost thou cover him over.

9 `But thou dost surely kill him; thy hand is on him, in the first place, to put him to death, and the hand of all the people last;

10 and thou hast stoned him with stones, and he hath died, for he hath sought to drive thee away from Jehovah thy God, who is bringing thee out of the land of Egypt, out of a house of servants;

11 and all Israel do hear and fear, and add not to do like this evil thing in thy midst.