Zadok was also there, and all the Levites with him were carrying the ark of the covenant of God. And they set down the ark of God, and Abiathar offered sacrifices until the people had passed out of the city.

Numbers 4:15
When Aaron and his sons have finished covering the holy objects and all their equipment, as soon as the camp is ready to move, the Kohathites shall come and do the carrying. But they must not touch the holy objects, or they will die. These are the transportation duties of the Kohathites regarding the Tent of Meeting.

1 Samuel 4:4
So the people sent men to Shiloh, and they brought back the ark of the covenant of the LORD of Hosts, who sits enthroned between the cherubim. And the two sons of Eli, Hophni and Phinehas, were there with the ark of the covenant of God.

1 Samuel 4:5
When the ark of the covenant of the LORD entered the camp, all the Israelites raised such a great shout that it shook the ground.

1 Samuel 22:20
But one of the sons of Ahimelech son of Ahitub escaped. His name was Abiathar, and he fled to David.

2 Samuel 8:17
Zadok son of Ahitub and Ahimelech son of Abiathar were priests; Seraiah was the scribe;

2 Samuel 20:25
Sheva was the scribe; Zadok and Abiathar were priests;

1 Kings 2:26
Then the king said to Abiathar the priest, "Go back to your fields in Anathoth. Even though you deserve to die, I will not put you to death at this time, since you carried the ark of the Lord GOD before my father David, and you suffered through all that my father suffered."

And see Zadok also, and all the Levites were with him, bearing the ark of the covenant of God: and they set down the ark of God; and Abiathar went up, until all the people had done passing out of the city.