Contradiction with Exodus 20:12
Proverbs 15:20 praises a wise son who gladdens his father, whereas Exodus 20:12 commands honoring both father and mother, emphasizing respect for both parents equally without highlighting one over the other.
Exodus 20:12: Honour thy father and thy mother: that thy days may be long upon the land which the LORD thy God giveth thee.
Contradiction with Ephesians 6:1
Proverbs 15:20 focuses on the individual action of a wise son for his father, while Ephesians 6:1 instructs children to obey their parents collectively in the Lord, without specifying behavior that distinguishes between wise and foolish.
Ephesians 6:1: Children, obey your parents in the Lord: for this is right.
Contradiction with Matthew 10:37
Proverbs 15:20 highlights the joy a son brings to his father, yet Matthew 10:37 suggests prioritizing love for Jesus over love for one's parents, suggesting a potential conflict of interests.
Matthew 10:37: He that loveth father or mother more than me is not worthy of me: and he that loveth son or daughter more than me is not worthy of me.
Contradiction with Luke 14:26
Proverbs 15:20 suggests familial harmony with a wise son, but Luke 14:26 speaks of hating one's own family to be a disciple, indicating a possible contradiction in family versus spiritual priorities.
Luke 14:26: If any [man] come to me, and hate not his father, and mother, and wife, and children, and brethren, and sisters, yea, and his own life also, he cannot be my disciple.