In my list of beliefs I call heretical on another thread I included: Denying the doctrine of the Trinity [one GOD, three persons]. Upon reflection I believe that without the Triune Godhead there would be no Salvation. It is God the Father who foreknew and chose a people to be His own before the foundation of the world [Ephesians 1:4]. It is God the Son who agrees to humble Himself, take upon Himself the form of man, and die on the cross to pay the penalty for the sins of those whom the Father has chosen to salvation so that none are lost [John 17; Philippians 2:6-10]. It is God the Holy Spirit who agrees to apply the work of the Son to those chosen by God the Father and who regenerates and effectually calls those whom God the Father has chosen unto salvation [John 6: 37, 44; Ephesians 2:1-10].