Charles Ellicott Commentary 1 Samuel 22:13

"And Saul said unto him, Why have ye conspired against me, thou and the son of Jesse, in that thou hast given him bread, and a sword, and hast inquired of God for him, that he should rise against me, to lie in wait, as at this day?" — 1 Samuel 22:13 (ASV)

And have enquired of God for him. —This using of the Urim and Thummim for David is again repeated by the king. It seems in Saul’s eyes to have been the gravest of the charges imputed to the high priest by Doeg, for Ahimelech especially in his defense returns to this point with particular insistence: the only charge, as it appears, to which Ahimelech deigned to reply, Did I then begin to enquire of God for him? (1 Samuel 22:15).