The Lord Jesus Christ speaks of faith in Him according to the word of the apostles:
“And for their sakes I sanctify Myself, that they also may be sanctified by the truth. I do not pray for these alone, but also for those who will believe in Me through their word; that they all may be one, as You, Father, are in Me, and I in You; that they also may be one in Us, that the world may believe that You sent Me” (John. 17:19-21)
The apostles repeatedly pointed out the necessity of keeping the faith handed down once: [Tradition] *This page is awaiting revision