Contradiction with Jeremiah 17:5
This verse cautions against placing trust in humans, whereas 2 Corinthians 7:16 expresses confidence in someone.
Jeremiah 17:5: Thus saith the LORD; Cursed [be] the man that trusteth in man, and maketh flesh his arm, and whose heart departeth from the LORD.
Contradiction with Psalm 118:8
This verse advises trusting in the Lord rather than in man, contrasting with the trust shown in 2 Corinthians 7:16.
Psalm 118:8: [It is] better to trust in the LORD than to put confidence in man.
Contradiction with Micah 7:5
Advises not to put confidence in a friend, seemingly opposing the expression of confidence in another person found in 2 Corinthians 7:16.
Micah 7:5: Trust ye not in a friend, put ye not confidence in a guide: keep the doors of thy mouth from her that lieth in thy bosom.