Contradiction with 1 Samuel 8:5-7
These verses indicate that having a king is a rejection of God as king, contrasting with the idea of removing the wicked to establish righteousness and stability under a ruler in Proverbs 25:5.
1 Samuel 8:5-7: And said unto him, Behold, thou art old, and thy sons walk not in thy ways: now make us a king to judge us like all the nations.
Contradiction with Hosea 13:10-11
God expresses anger over Israel asking for a king, contradicting the ideal of a king's establishment found in Proverbs 25:5.
Hosea 13:10-11: I will be thy king: where [is any other] that may save thee in all thy cities? and thy judges of whom thou saidst, Give me a king and princes? [I will...: rather, Where is thy king?]
Contradiction with 1 Samuel 12:19
Israel regrets asking for a king, which contrasts with the notion of removing wickedness to stabilize the throne found in Proverbs 25:5.
1 Samuel 12:19: And all the people said unto Samuel, Pray for thy servants unto the LORD thy God, that we die not: for we have added unto all our sins [this] evil, to ask us a king.