Genesis 18:4-8

4Let a little water be brought, and wash your feet, and rest yourselves under the tree, 5while I bring a morsel of bread, that you may refresh yourselves, and after that you may pass on—since you have come to your servant.” So they said, “Do as you have said.” 6And Abraham went quickly into the tent to Sarah and said, “Quick! Three seahs of fine flour! Knead it, and make cakes.” 7And Abraham ran to the herd and took a calf, tender and good, and gave it to a young man, who prepared it quickly. 8Then he took curds and milk and the calf that he had prepared, and set it before them. And he stood by them under the tree while they ate.