1 Samuel 21:1

Then came David to Nob to Ahimelech the priest: and Ahimelech was afraid at the meeting of David, and said unto him, Why art thou alone, and no man with thee?

Cross-reference

1 Samuel 22:9-19 recounts Doeg's report and Saul's massacre of the priests — the direct consequence of David's visit to Ahimelech.

1 Samuel 22:19 Historical context

In 1 Samuel 22:19, Saul kills the priests of Nob as a direct consequence of Ahimelech helping David here.

1 Samuel 22:22 has David confessing he knew Doeg would tell Saul — directly linking back to his visit and lie at Nob.

1 Samuel 14:3 Historical context

1 Samuel 14:3 introduces Ahiah, son of Ahitub — Ahimelech is also son of Ahitub (1 Sam 22:11), providing family background.

Mark 2:26 Citation

Mark 2:26 cites this event — Jesus refers to David eating the showbread at Nob, though naming Abiathar instead of Ahimelech.