1 Samuel 16:2-5

2And Samuel said, How shall I go? if Saul hear [it], he will kill me. And Jehovah said, Take a heifer with thee, and say, I am come to sacrifice to Jehovah.

3And call Jesse to the sacrifice, and I will tell thee what thou shalt do; and thou shalt anoint unto me him whom I name unto thee.

4And Samuel did what Jehovah said, and came to Bethlehem. And the elders of the city came trembling to meet him, and said, Dost thou come peaceably?

5And he said, Peaceably: I am come to sacrifice to Jehovah. Hallow yourselves, and come with me to the sacrifice. And he hallowed Jesse and his sons, and called them to the sacrifice.