When David learned that Saul was plotting against him, he said to Abiathar1 the priest, "Bring the ephod.2"
References for 1 Samuel 23:9
David said, "O LORD, God of Israel, your servant has heard definitely that Saul plans to come to Keilah and destroy the town on account of me.
Will the citizens of Keilah surrender me to him? Will Saul come down, as your servant has heard? O LORD, God of Israel, tell your servant." And the LORD said, "He will."
Again David asked, "Will the citizens of Keilah surrender3 me and my men to Saul?" And the LORD said, "They will."
References for 1 Samuel 23:12