Genesis 18:2-3, 8

He looked up and saw three men standing near him. When Abraham saw them, he ran from his tent to meet them. He bowed facedown on the ground before them and said, “Sir, if you think well of me, please stay awhile with me, your servant.

Abraham gave the three men the calf that had been cooked and milk curds and milk. While they ate, he stood under the tree near them.