"In the beginning was the
Word, and the Word was with God, and the Word was God."
-- John 1:1.
Many texts in the Scriptures record that Christ claimed to be divine. Even his enemies confirmed that he made this claim.
If someone makes such a claim, we immediately will ask for proof -- some demonstration that shows his supernatural powers. He gave many such proofs to his disciples, although he was reluctant to show them to the skeptics, because he wanted peoples' hearts to be convinced by faith, not by miracles or arguments. Read I Corinthians 1-2; Colossians 2.