'Offered Sacrifices' in the Bible

And Absalom sent for Ahithophel the Gilonite, David's counseller, from his city, even from Giloh, while he offered sacrifices. And the conspiracy was strong; for the people increased continually with Absalom.

Suddenly Zadok [was] there, and all of the Levites with him, carrying the ark of the covenant of God. They set the ark of God down, and Abiathar offered sacrifices until all the people passed out of the city.