1 Samuel 16:4-5

And Samuel did that which Jehovah spake, and came to Beth-lehem. And the elders of the city came to meet him trembling, and said, Comest thou peaceably? And he said, Peaceably; I am come to sacrifice unto Jehovah: sanctify yourselves, and come with me to the sacrifice. And he sanctified Jesse and his sons, and called them to the sacrifice.