1 Samuel 23:2 shows David inquiring of the Lord; the ephod here provides the means for that inquiry.

1 Samuel 23:9 shows David commanding Abiathar to bring the ephod to inquire about Saul—a direct use of this ephod.

1 Samuel 22:20 records Abiathar's escape from Nob, the event that leads to him fleeing to David at Keilah with the ephod.

1 Samuel 14:37 shows Saul inquiring of God but receiving no answer — contrasts with David's successful inquiries using the ephod later in this chapter.

1 Samuel 14:3 introduces Ahijah, a priest wearing an ephod, linking to Abiathar's ephod here — both from the same priestly line.

Exodus 28:30 describes the Urim and Thummim placed in the ephod's breastpiece, explaining the purpose of the ephod Abiathar brings.

Exodus 28:4 describes the ephod as part of the high priest's garments—the very object Abiathar brings to David here.