1 Samuel 16:3-5

You shall invite Jesse to the sacrifice, and I will show you what you shall do; and you shall anoint for Me the one whom I designate to you.” So Samuel did what the LORD said, and came to Bethlehem. And the elders of the city came trembling to meet him and said, “Do you come in peace?” He said, “In peace; I have come to sacrifice to the LORD. Consecrate yourselves and come with me to the sacrifice.” He also consecrated Jesse and his sons and invited them to the sacrifice.