Genesis 18:2 (KJV) - 2 And he lift up his eyes and looked, and, lo, three men stood by him: and when he saw them, he ran to meet them from the tent door, and bowed himself toward the ground,
Genesis 18:5 (KJV) - 5 And I will fetch a morsel of bread, and comfort ye your hearts; after that ye shall pass on: for therefore are ye come to your servant. And they said, So do, as thou hast said.
Genesis 18:6 (KJV)
And Abraham hastened into the tent unto Sarah, and said, make ready quickly three measures of fine meal, knead it and nake cakes upon the hearth.
Genesis18:8 (KJV)
And he took butter, and milk, and the calf which he had dressed, and set it before them, and he stood by them under the tree, and they did eat.
Genesis 18:10 (KJV) - 18 And he said, I will certainly return unto thee according to the time of life; and, lo, Sarah thy wife shall have a son. And Sarah heard it in the tent door, which was behind him.
Genesis 18:14 (KJV) - 14 Is any thing too hard for the LORD? At the time appointed I will return unto thee, according to the time of life, and Sarah shall have a son.