Contradiction with 1 Corinthians 8:1
Suggests that knowledge puffs up, while Psalm 119:34 calls for understanding to keep the law.
1 Corinthians 8:1: Now as touching things offered unto idols, we know that we all have knowledge. Knowledge puffeth up, but charity edifieth.
Contradiction with Romans 4:15
States that the law brings wrath, whereas Psalm 119:34 seeks understanding to observe the law.
Romans 4:15: Because the law worketh wrath: for where no law is, [there is] no transgression.
Contradiction with Galatians 5:18
Says if you are led by the Spirit, you are not under the law, seemingly opposing the adherence to law as desired in Psalm 119:34.
Galatians 5:18: But if ye be led of the Spirit, ye are not under the law.
Contradiction with Matthew 5:17
Jesus claims to fulfill the law, which may contrast with the pursuit of personally understanding and keeping the law in Psalm 119:34.
Matthew 5:17: Think not that I am come to destroy the law, or the prophets: I am not come to destroy, but to fulfil.
Contradiction with James 2:10
Indicates that failing in one point of the law makes one guilty of all, which complicates the straightforward observance emphasized in Psalm 119:34.
James 2:10: For whosoever shall keep the whole law, and yet offend in one [point], he is guilty of all.