HERETICS
Heretics in holding false opinions regarding God, do injury to the faith itself.
Augustine of Hippo
If a man blatantly denies the deity of Christ or that Christ has come in the flesh, we are not to even bid him godspeed. Thus, the Scriptures teach that we are to be separated from those who deny the deity of our Lord Jesus Christ. I am to treat him as an Anti-Christ and an enemy of the cross.
Billy Graham