Contradiction with Proverbs 4:7
While Matthew 13:51 depicts the disciples as understanding, Proverbs 4:7 notes that wisdom and understanding are principal things to pursue, implying they are not already possessed.
Proverbs 4:7: Wisdom [is] the principal thing; [therefore] get wisdom: and with all thy getting get understanding.
Contradiction with Isaiah 6:9-10
In contrast to Matthew 13:51 where understanding is affirmed, Isaiah 6:9-10 speaks of a people who hear but do not understand.
Isaiah 6:9-10: And he said, Go, and tell this people, Hear ye indeed, but understand not; and see ye indeed, but perceive not. [indeed, but understand: or, without ceasing, etc: Heb. in hearing, etc]
Contradiction with John 16:12
Here, Jesus implies there are things the disciples cannot understand yet, contradicting Matthew 13:51 where they claim understanding.
John 16:12: I have yet many things to say unto you, but ye cannot bear them now.
Contradiction with John 12:16
This verse indicates the disciples did not understand certain events at first, contrasting with Matthew 13:51's assertion of understanding.
John 12:16: These things understood not his disciples at the first: but when Jesus was glorified, then remembered they that these things were written of him, and [that] they had done these things unto him.
Contradiction with Romans 11:33
The passage highlights God’s unsearchable judgments and ways, suggesting a complexity that contradicts the disciples' professed understanding in Matthew 13:51.
Romans 11:33: O the depth of the riches both of the wisdom and knowledge of God! how unsearchable [are] his judgments, and his ways past finding out!