I honestly think this is a great question. When I read it the first Scripture that popped into my head is John 5:46-47, If you believed Moses, you would believe me, for he wrote about me. But since you do not believe what he wrote, how are you going to believe what I say?". (Y-shua speaking).
My opinion is, we believe the Bible is the infallible, inerrant Word of G-d by faith. It’s all by faith. Would we believe it more if Y-shua sat down and wrote it with ink and parchment? I honestly don’t think so. It would still be by faith, because if Y-shua wrote Himself I died and rose again now believe in me because I am G-d, it would be the same response as eyewitnesses saying it. He is either a liar, crazy, or it is true.