Now one of the sons of Ahimelech the son of Ahitub, named Abiathar, escaped and fled after David.
1 Samuel 22:20
Surrounding context
22:19 Also Nob, the city of the priests, he struck with the edge of the sword, both men and women, children and nursing infants, oxen and donkeys and sheep--with the edge of the sword.
22:20 Now one of the sons of Ahimelech the son of Ahitub, named Abiathar, escaped and fled after David.
22:21 And Abiathar told David that Saul had killed the LORD's priests.