1 John 2:22-23 -- "Who is a liar but he that denieth that Jesus is the Christ? He is antichrist, that denieth the Father and the Son. Whosoever denieth the Son, the same hath not the Father: (but) he that acknowledgeth the Son hath the Father also.
Consquently, they do not have the Father. They worship a false God.
As Christians we are required to speak the truth. It is not *loving* to be silent while someone is hellbent.
TRUTH,