The High Priest: Duties of Enquiring of God by Urim and Thummim

When David learned that Saul was plotting evil against him, he said to Abiathar the priest, “Bring the ephod.” …

Then David said to Abiathar the priest, the son of Ahimelech, “Bring me the ephod.” So Abiathar brought it to him,

…and David inquired of the LORD: “Should I pursue these raiders? Will I overtake them?” “Pursue them,” the LORD replied, “for you will surely overtake them and rescue the captives.”