Deuteronomy 13:6-9

WEB_Strongs(i)
  6 H251 If your brother, H1121 the son H517 of your mother, H1121 or your son, H1323 or your daughter, H802 or the wife H2436 of your bosom, H7453 or your friend, H5315 who is as your own soul, H5496 entice H5643 you secretly, H559 saying, H3212 "Let us go H5647 and serve H312 other H430 gods," H3045 which you have not known, H1 you, nor your fathers;
  7 H430 of the gods H5971 of the peoples H5439 who are around H7138 you, near H7350 to you, or far off H7097 from you, from the one end H776 of the earth H7097 even to the other end H776 of the earth;
  8 H14 you shall not consent H8085 to him, nor listen H5869 to him; neither shall your eye H2347 pity H2550 him, neither shall you spare, H3680 neither shall you conceal him:
  9 H2026 but you shall surely H2026 kill H3027 him; your hand H7223 shall be first H4191 on him to put him to death, H314 and afterwards H3027 the hand H5971 of all the people.