Deuteronomy 13:5-9

5And that prophet, or that dreamer of dreams, shall be put to death; for he hath spoken revolt against Jehovah your 1GodH430 who brought you out of the land of Egypt, and redeemed you out of the house of bondage, — to draw thee out of the way that Jehovah thy 2GodH430 commandedH4687 thee to walk in; and thou shalt put evil away from thy midst.

6If thy brother, the son of thy mother, or thy son, or thy daughter, or the wife of thy bosom, or thy friend, who is to thee as thy soul, entice thee secretly, sayingH1696, Let us goH3318 and serve other 3godsH430 (whom thou hast not known, thou, nor thy fathers;

7of the 4godsH430 of the peoples which are round about you, near unto thee, or far from thee, from one end of the earth even unto the otherH312 end of the earth),

8thou shalt not consent unto him, nor hearken unto him; neither shall thine eye spare him, neither shalt thou pity him, neither shalt thou screen him,

9but thou shalt in any case kill him: thy hand shall be the first against him to put him to death, and afterwards the hands of all the people;