Stay with me; do not be afraid, for he who seeks your life is seeking mine as well. You will be safe with me.”
Here is, 1. The escape of Abiathar, the son of Ahimelech, out of the desolations of the priests' city. Probably when his father went to appear, upon Saul's summons, he was left at home to attend the altar, by which means he escaped the first execution, and, before Doeg and his bloodhounds came to Nob, he had intelligence of the danger, and had time to shift for his own safety.
Commenting on 1 Samuel 22:20-23
He that seeketh my life seeketh thy life - The enmity of Saul is directed against thee as well as against me, and thou canst have no safety but in being closely attached to me; and I will defend thee even at the risk of my own life. This he was bound in duty and conscience to do.
1Sa 22:20-23 The only one of the whole body of priests who escaped this bloody death was a son of Ahimelech, named Abiathar, who “fled after David,” i.e., to David the fugitive, and informed him of the barbarous vengeance which Saul had taken upon the priests of the Lord. Then David recognised and confessed his guilt.
Commenting on 1 Samuel 22:20-23