1 Samuel 13:13

13And Samuel said to Saul: “You have acted foolishly. You have not kept the commandments of the Lord your God, which he instructed to you. And if you had not acted in this way, the Lord would, here and now, have prepared your kingdom over Israel forever.
13:13Saul committed a sacrilege. Saul was not a priest, and therefore he should not have offered the sacrifice. Samuel was the priest; Saul was not.(Conte)
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