Contradiction with Proverbs 21:31
Proverbs 21:31 highlights that victory comes from the Lord, whereas 1 Samuel 4:1 depicts Israel relying on their own strength in battle.
Proverbs 21:31: The horse [is] prepared against the day of battle: but safety [is] of the LORD. [safety: or, victory]
Contradiction with 1 Samuel 17:47
1 Samuel 17:47 emphasizes that the battle is the Lord's, in contrast to 1 Samuel 4:1 where the Israelites act on their own initiative.
1 Samuel 17:47: And all this assembly shall know that the LORD saveth not with sword and spear: for the battle [is] the LORD'S, and he will give you into our hands.