Strong G720 ἀρνέομαι arneomai · to deny

1 John

1. 1 John 2:22
   Who is a liar but he that denieth that Jesus is the Christ? He is antichrist, that denieth the Father and the Son.
2. 1 John 2:23
   Whosoever denieth the Son, the same hath not the Father: [but] he that acknowledgeth the Son hath the Father also.