1 Samuel 2:28 describes God's choice of Eli's house as priests and the ephod, grounding Ahijah's ephod in divine institution.

1 Samuel 4:21 gives the origin of Ichabod, whose brother Ahitub is Ahijah's father, providing the tragic backstory of the priestly family.

1 Samuel 22:9-12 introduces Ahimelech, also son of Ahitub, showing the priestly line that Saul later massacres, linking Ahijah to that tragedy.

1 Samuel 2:31 prophesies judgment on Eli's house; Ahijah here is a descendant, showing the priesthood still in that doomed line.

1 Samuel 22:20 records Abiathar, grandson of Ahitub, escaping the massacre, continuing the priestly lineage mentioned in 14:3.

1 Samuel 21:1 introduces Ahimelech the priest; both Ahijah here and Ahimelech are sons of Ahitub from Eli's priestly line.

1 Samuel 23:6 shows Abiathar bringing an ephod to David; like Ahijah here, he is a priest from Eli's line carrying an ephod.

Exodus 28:26-32 describes the design of the ephod that Ahijah wears, connecting his priestly role to the original tabernacle instructions.

1 Chronicles 6:7 traces the Levitical genealogy, including Ahitub, father of Ahijah here, placing him in the priestly lineage.