He said, “Peaceably; I have come to sacrifice to Yahweh. Sanctify yourselves, and come with me to the sacrifice.” He sanctified Jesse and his sons, and called them to the sacrifice.
1Sa 16:5 Samuel quieted them with the reply that he was come to offer sacrifice to the Lord, and called upon them to sanctify themselves and take part in the sacrifice. It is evident from this that the prophet was accustomed to turn his visits to account by offering sacrifice, and so building up the people in fellowship with the Lord.
sanctify yourselves--by the preparations described (Exo 19:14-15). The elders were to sanctify themselves. Samuel himself took the greatest care in the sanctification of Jesse's family. Some, however, think that the former were invited only to join in the sacrifice, while the family of Jesse were invited by themselves to the subsequent feast.
And he said, peaceably I am come to sacrifice unto the Lord,.... Which he could say with truth, it being one end of his coming, though not the only one for which he came, and which he was not obliged to tell: sanctify yourselves, and come with me to the sacrifice; prepare themselves for it, which was done by washing their garments, &c.