1 Samuel 16:5

And he said, Peaceably: I am come to sacrifice unto the LORD: sanctify yourselves, and come with me to the sacrifice. And he sanctified Jesse and his sons, and called them to the sacrifice.

Ver. 5. I am come to sacrifice unto the Lord.] This prophets might do, either upon occasion, or without, for the blessing and comfort of certain places and cities. See 1 Samuel 9:12 .

Sanctify yourselves.] By washing your garments; Exo 19:14-15 but especially your hearts: Isa 1:16 prepare yourselves both legally and spiritually.

And called them to the sacrifice.] And to the feast that followed the sacrifice with part of the peace offering, kept, likely, at the house of Jesse.