1 Samuel 23:9

And David said to Abiathar the priest, Ahimelech’s son, I pray thee, bring me hither the ephod. And Abiathar brought thither the ephod to David.

And it came to pass, when Abiathar the son of Ahimelech fled to David to Keilah, that he came down with an ephod in his hand.

And he shall stand before Eleazar the priest, who shall ask counsel for him after the judgment of Urim before the LORD: at his word shall they go out, and at his word they shall come in, both he, and all the children of Israel with him, even all the congregation.

They were ware of it, and fled unto Lystra and Derbe, cities of Lycaonia, and unto the region that lieth round about:

But their laying await was known of Saul. And they watched the gates day and night to kill him.

And Saul said unto Ahiah, Bring hither the ark of God. For the ark of God was at that time with the children of Israel.

Call unto me, and I will answer thee, and shew thee great and mighty things, which thou knowest not.

And one of the sons of Ahimelech the son of Ahitub, named Abiathar, escaped, and fled after David.