20-23. one of the sons of Ahimelech . . . escaped—This was Abiathar, who repaired to David in the forest of Hareth, rescuing, with his own life, the high priest's vestments (1Sa 23:6, 9). On hearing his sad tale, David declared that he had dreaded such a fatal result from the malice and intriguing ambition of Doeg; and, accusing himself as having been the occasion of all the disaster to Abiathar's family, David invited him to remain, because, firmly trusting himself in the accomplishment of the divine promise, David could guarantee protection to him.

     17. Zadok . . . and Ahimelech . . . were the priests—On the massacre of the priests at Nob, [1Sa 22:19], Saul conferred the priesthood on Zadok, of the family of Eleazar (1Ch 6:50), while David acknowledged Ahimelech, of Ithamar's family, who fled to him. The two high priests exercised their office under the respective princes to whom they were attached. But, on David's obtaining the kingdom over all Israel, they both retained their dignity; Ahimelech officiating at Jerusalem, and Zadok at Gibeon (1Ch 16:39).