Marco 2:26

How he went into the house of God in the days of Abiathar the high priest, and did eat the shewbread, which is not lawful to eat but for the priests, and gave also to them which were with him? The days of Abiathar the high priest - It appears from 1 Samuele 21:1, which is the place referred to here, that Ahimelech was then high priest at Nob: and from 1 Samuele 22:20; 1 Samuele 23:6, and 1 Cronache 18:16, it appears that Abiathar was the son of Ahimelech.

The Persic reads Abimelech instead of Abiathar. Theophylact supposes that Abiathar was the priest, and Ahimelech or Abimelech the high priest, and thus endeavors to reconcile both the sacred historians. Others reconcile the accounts thus: Ahimelech was called Ahimelech Abiathar, אב ab, father, understood; and Abiathar was called Abiathar Ahimelech, בן ben, son, understood. Probably they both officiated in the high priesthood; and the name of the office was indifferently applied to either.

Shew-bread - See Matteo 12:4.