Why was it not OK for Saul to make a sacrifice to God after the battle with the Amalekites?
1 Samuel 15:13 - 15
ESV - 13 And Samuel came to Saul, and Saul said to him, "Blessed be you to the Lord. I have performed the commandment of the Lord. 14 And Samuel said, "What then is this bleating of the sheep in my ears and the lowing of the oxen that I hear?
For follow-up discussion and general commentary on the topic. Comments are sorted chronologically.
I believe what the other people said is true but if you read it carefully, Samuel was there with Saul and the Israelites. Samuel was the one who did the sacrificing, Saul either assisted or was a "watcher".