Contradiction with 1 Corinthians 1:26-27
These verses state that God has chosen the foolish, weak, and base things of the world, which seems to contradict the idea of "less than the least" being granted grace to preach unsearchable riches.
1 Corinthians 1:26-27: For ye see your calling, brethren, how that not many wise men after the flesh, not many mighty, not many noble, [are called]:
Contradiction with Matthew 11:25
This verse says that God has hidden things from the wise and prudent and revealed them to babes, which contradicts the notion of being granted to preach the unsearchable riches.
Matthew 11:25: At that time Jesus answered and said, I thank thee, O Father, Lord of heaven and earth, because thou hast hid these things from the wise and prudent, and hast revealed them unto babes.
Contradiction with 1 Timothy 1:15
Here, Paul refers to himself as the chief of sinners, which appears to contradict the humility and grace discussed in Ephesians 3:8 regarding being less than the least of all saints.
1 Timothy 1:15: This [is] a faithful saying, and worthy of all acceptation, that Christ Jesus came into the world to save sinners; of whom I am chief.
Contradiction with Psalm 8:4-5
This passage speaks of man's exalted position, being made a little lower than the angels, which contrasts with describing oneself as less than the least.
Psalm 8:4-5: What is man, that thou art mindful of him? and the son of man, that thou visitest him?