Contradiction with 1 Kings 6:12
While 1 Samuel 12:3 speaks of Samuel's integrity, 1 Kings 6:12 emphasizes obedience to God's commandments over personal morality.
1 Kings 6:12: [Concerning] this house which thou art in building, if thou wilt walk in my statutes, and execute my judgments, and keep all my commandments to walk in them; then will I perform my word with thee, which I spake unto David thy father:
Contradiction with Matthew 19:21
1 Samuel 12:3 claims no wrongdone, yet Matthew 19:21 emphasizes the need for completeness by acts of charity, which Samuel does not mention.
Matthew 19:21: Jesus said unto him, If thou wilt be perfect, go [and] sell that thou hast, and give to the poor, and thou shalt have treasure in heaven: and come [and] follow me.
Contradiction with Romans 3:23
1 Samuel 12:3 implies Samuel is without fault, whereas Romans 3:23 asserts that all have sinned.
Romans 3:23: For all have sinned, and come short of the glory of God;
Contradiction with Philippians 3:12
While 1 Samuel 12:3 discusses Samuel being blameless, Philippians 3:12 states that no one has yet reached perfection.
Philippians 3:12: Not as though I had already attained, either were already perfect: but I follow after, if that I may apprehend that for which also I am apprehended of Christ Jesus.
Contradiction with 1 John 1:8
Samuel claims integrity in 1 Samuel 12:3, but 1 John 1:8 suggests anyone claiming sinlessness is self-deceived.
1 John 1:8: If we say that we have no sin, we deceive ourselves, and the truth is not in us.