Deuteronomy 13:7

4 Ye shall walk after the LORD your God, and fear him, and keep his commandments, and obey his voice, and ye shall serve him, and cleave to him.

5 And that prophet, or that dreamer of dreams, shall be put to death; because he hath spoken to turn [you] away from the LORD your God, who brought you out of the land of Egypt, and redeemed you from the house of bondage, to thrust thee out of the way which the LORD thy God commanded thee to walk in. So shalt thou remove the evil from the midst of thee.

6 If thy brother, the son of thy mother, or thy son, or thy daughter, or the wife of thy bosom, or thy friend, who [is] as thy own soul, shall entice thee secretly, saying, Let us go and serve other gods, which thou hast not known, thou, nor thy fathers;

7 [Namely], of the gods of the people who [are] around you, nigh to thee, or far off from thee, from [one] end of the earth even to the [other] end of the earth;

8 Thou shalt not consent to him, nor hearken to him; neither shall thy eye pity him, neither shalt thou spare, neither shalt thou conceal him:

9 But thou shalt surely kill him; thy hand shall be first upon him to put him to death, and afterwards the hand of all the people.

10 And thou shalt stone him with stones that he shall die; because he hath sought to thrust thee away from the LORD thy God, who brought thee out of the land of Egypt from the house of bondage.