CCC 590 Only the divine identity of Jesus’ person can justify so absolute a claim as “He who is not with me is against me”; and his saying that there was in him “something greater than Jonah,... greater than Solomon”, something “greater than the Temple”; his reminder that David had called the Messiah his Lord,1 and his affirmations, “Before Abraham was, I AM”, and even “I and the Father are one.”2
1 Cf. Mt 12:6, 30, 36, 37, 41-42.
2 Jn 8:58; 10:30.