The Deity of Christ. John 8:24: “You will die in your sins.” Since Jesus is a distinct person, any denial of the Trinity would result in the same consequences (1 John 2:22-23).
The belief that Jesus is the Son of God. John 3:16, 36: “… The one who rejects the Son will not see life, but God’s wrath remains on him.”
The physical resurrection. 1 Cor. 15:12-17. 17 “And if Christ has not been raised, your faith is useless; you are still in your sins.”
The perpetual incarnation. 1 John 4:2-3; 2 John 1:7: the one who denies the perpetual incarnation of the Son, is “the deceiver and the antichrist.”
And a denial of justification through faith alone. Gal. 1:8-9: “Let him be anathema.” A gospel apart from justification through faith alone is “a different gospel”—a gospel without Christ.