But Saul and the people spared Agag, and the best of the sheep, and of the oxen, and of the fatlings, and the lambs, and all that was good, and wouldn't utterly destroy them: but everything that was vile and refuse, that they destroyed utterly.
Saul’s lack of submission was an even more serious sin than David’s sins of murder and adultery. God did not remove the kingship from David for his sins, but He did from Saul.