After Saul’s victory over the Ammonites, some people suggested that those who had opposed his kingship should be executed. However, Saul refused to take revenge and instead declared:

1 Samuel 11:13 (RSV)
"But Saul said, ‘No man shall be put to death this day, for today the Lord has wrought deliverance in Israel.’"

This shows that Saul, at this early stage of his reign, was humble and attributed the victory to God, choosing unity over vengeance.