1 Samuel 21:1 - The Popular Commentary by Paul E. Kretzmann

Then came David to Nob, a city of priests between Gibeah and Jerusalem, on a hill in whose neighborhood the Tabernacle seems to have been located for some years, at least temporarily,4) to Ahimelech, the priest, either he or his father or his son also bearing the name Abiathar, Mark 2:26; and Ahimelech was afraid at the meeting of David, full of apprehension, since he may have known of Saul's hatred of David, and said unto him, Why art thou alone, and no man with thee? For David had left the few companions who had joined him in a safe place, since he wanted to talk to the high priest alone.