John Gill Commentary 1 Samuel 22:16

"And the king said, Thou shalt surely die, Ahimelech, thou, and all thy father`s house." — 1 Samuel 22:16 (ASV)

And the king said, you shall surely die, Ahimelech He pronounces the sentence himself, without taking the opinion and advice of others, or further time; which was an act of arbitrary power, and upon an innocent person, which was an act of great injustice:

you, and all your father's house more unrighteous still; but God suffered him to do this to fulfil his will, and execute his threatenings against the house of Eli, which was this priest's father's house, for former wickedness; but this is no excuse for, nor extenuation of the sin of, Saul.