Trinity and biblical inerrancy
If you don't have biblical inerrancy, you don't have Christianity:
The doctrine of the Trinity is the glory of the Christian faith. It is drawn entirely from revelation. It depends on the absolute truth of the sentences through which the Scriptures teach us about God and his nature, his character, his purposes, his actions and promises. The doctrine depends, for example, on the infallibility and inerrancy of the teaching in St John's Gospel, or the Epistle to the Ephesians or the last paragraph of St Matthew's Gospel, because the doctrine of the Trinity is not enunciated fully in any one passage but is gathered from many statements of the Scriptures. If we cannot rely on the verbal inspiration of Scripture, the doctrine of the Trinity has no basis.
D Broughton Knox, ‘The Implications of the Doctrine of the Trinity for Theology and for Ordinary Life’, Appendix B, Selected Works Volume I: The Doctrine of God, Matthias Media, 2000, p. 153.
Here Broughton insists on both the infallibility and the inerrancy of Scripture—neither confounding their meanings nor dividing their substance.