20 But one son of Ahimelek son of Ahitub, named Abiathar, escaped and fled to join David.

Read 1 Samuel 22:20 Using Other Translations

And one of the sons of Ahimelech the son of Ahitub, named Abiathar, escaped, and fled after David.
But one of the sons of Ahimelech the son of Ahitub, named Abiathar, escaped and fled after David.
Only Abiathar, one of the sons of Ahimelech, escaped and fled to David.