Adam Clarke on 1 Samuel 13:12

I forced myself - It was with great reluctance that I did what I did. In all this Saul was sincere, but he was rash, and regardless of the precept of the Lord, which precept or command he most evidently had received, 1Sam 13:13. And one part of this precept was, that the Lord should tell him what he should do. Without this information, in an affair under the immediate cognizance of God, he should have taken no step.