Abiathar escapes to join David
Abiathar the priest escaped from Nob when Saul was destroying it. He came to David and David took responsibility for the tragedy.
Key passages
1 Sa 22:20–23

But, one of the sons of Ahimelech the son of Ahitub, whose name was Abiathar, escaped and fled after David. Abiathar told David that Saul had killed the priests of Yahweh. Then David said to Abiathar, “I knew on that day that Doeg the Edomite was there, that he would certainly tell Saul. …

See also
1 Sa 23:6;
See also
Important Things