Contradiction with Jeremiah 9:23
This verse advises against boasting in wisdom, might, or riches, while 1 Corinthians 1:31 encourages boasting in the Lord, suggesting a contradiction in the source or subject of boasting.
Jeremiah 9:23: Thus saith the LORD, Let not the wise [man] glory in his wisdom, neither let the mighty [man] glory in his might, let not the rich [man] glory in his riches:
Contradiction with Proverbs 27:2
Encourages letting another person praise you and not your own lips, which contrasts with boasting in the Lord as personal expression in 1 Corinthians 1:31.
Proverbs 27:2: Let another man praise thee, and not thine own mouth; a stranger, and not thine own lips.
Contradiction with Matthew 6:1
Warns against performing acts of righteousness before others to be seen by them, which contradicts the idea of openly boasting in the Lord as suggested in 1 Corinthians 1:31.
Matthew 6:1: Take heed that ye do not your alms before men, to be seen of them: otherwise ye have no reward of your Father which is in heaven. [alms: or, righteousness] [of your: or, with your]
Contradiction with James 4:16
Discusses the problem of rejoicing in boasting, referring to it as evil, while 1 Corinthians 1:31 promotes boastfulness in the Lord as righteous.
James 4:16: But now ye rejoice in your boastings: all such rejoicing is evil.