I Samuel 23:4, 6, 9-12

Then David inquired of the LORD once again. And the LORD answered him and said, “Arise, go down to Keilah. For I will deliver the Philistines into your hand.”

Now it happened, when Abiathar the son of Ahimelech fled to David at Keilah, that he went down with an ephod in his hand.

When David knew that Saul plotted evil against him, he said to Abiathar the priest, “Bring the ephod here.” 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. Will the men of Keilah deliver me into his hand? Will Saul come down, as Your servant has heard? O LORD God of Israel, I pray, tell Your servant.” And the LORD said, “He will come down.” Then David said, “Will the men of Keilah deliver me and my men into the hand of Saul?” And the LORD said, “They will deliver you.”