When David knew that Saul plotted evil against him, he said to Abiathar the priest, "Bring the ephod here."
1 Samuel 23:9
Surrounding context
23:8 Then Saul called all the people together for war, to go down to Keilah to besiege David and his men.
23:9 When David knew that Saul plotted evil against him, he said to Abiathar the priest, "Bring the ephod here."
23:10 Then David said, "O LORD God of Israel, Your servant has certainly heard that Saul seeks to come to Keilah to destroy the city for my sake.