Contradiction with 1 Samuel 13:4
It claims all of Israel heard Saul had defeated the garrison, whereas 1 Samuel 13:3 credits Jonathan with the victory.
1 Samuel 13:4: And all Israel heard say [that] Saul had smitten a garrison of the Philistines, and [that] Israel also was had in abomination with the Philistines. And the people were called together after Saul to Gilgal. [was...: Heb. did stink]
Contradiction with 1 Chronicles 10:14
This verse indicates that Saul died for his unfaithfulness, contradicting the notion that Saul was the victorious leader as implied in Samuel.
1 Chronicles 10:14: And enquired not of the LORD: therefore he slew him, and turned the kingdom unto David the son of Jesse. [Jesse: Heb. Isai]
Contradiction with Proverbs 21:31
This verse suggests that safety and victory come from the Lord, contradicting the idea that it was Saul's or Jonathan’s own doing in 1 Samuel 13:3.
Proverbs 21:31: The horse [is] prepared against the day of battle: but safety [is] of the LORD. [safety: or, victory]