1 Samuel 15:9-15:
Saul and his men spared Agag’s life and kept the best of the sheep and goats, the cattle, the fat calves, and the lambs –-- everything, in fact, that appealed to them. They destroyed only what was worthless or of poor quality. Then the Lord said to Samuel, “I am sorry that I ever made Saul king, for he has not been loyal to me and has refused to obey my command.” Samuel was so deeply moved when he heard this that he cried out to the Lord all night. Erly the next morning Samuel went to find Saul. Someone told him, “Saul went to the town of Carmel to set up a monument to himself; then he went on to Gilgal.” When Samuel finally found him, Saul greeted him cheerfully. “May the Lord bless you,” he said. “I have carried out the Lord’s command!” “Then what is all the bleating of sheep and goats and the lowing of cattle I hear?” Samuel demanded? “It’s true that the army spared the best of the sheep, goats, and cattle,” Saul admitted. “But they are going to sacrifice them to the Lord your God. We have destroyed everything else.”
1 Samuel 15:22-23:
But Samuel replied, “What is more pleasing to the Lord: your burnt offering and sacrifices or your obedience to his voice? Listen! Obedience is better than sacrifice, and submission is better than offering the fat of rams. Rebellion is as sinful as witchcraft, and stubbornness as bad as worshiping idols. So because you have rejected the command of the Lord, he has rejected you as king.”
Not better:
"Improving" on God's plans or ideas
You cannot honor God by disobeying God!
Not better:
I'll obey if God makes it easier for me to obey!
Not better:
I'll obey in a little while. . .
Obedience is better than sacrifice, and submission is better than offering!
Not better:
Disobeying, but compensating!