Genesis 18:8-10 Young's Literal Translation (YLT)
8 and he taketh butter and milk, and the son of the herd which he hath prepared, and setteth before them; and he is standing by them under the tree, and they do eat.
9 And they say unto him, `Where [is] Sarah thy wife?' and he saith, `Lo -- in the tent;'
10 and he saith, `returning I return unto thee, about the time of life, and lo, to Sarah thy wife a son.'