“Where is your wife Sarah?” they asked. “There, in the tent,” he replied.
9. Where is Sarah? Hitherto God permitted Abraham to discharge an obvious duty. But, having given him the opportunity of exercising charity, God now begins to manifest himself in his angels. The reason why Moses introduces, at one time, three speakers, while, at another, he ascribes speech to one only, is, that the three together represent the person of one God.
These heavenly guests (being sent to confirm the promise lately made to Abraham, that he should have a son by Sarah), while they are receiving Abraham's kind entertainment, they return his kindness. He receives angels, and has angels' rewards, a gracious message from heaven, Mat 10:41. I. Care is taken that Sarah should be within hearing.
Commenting on Genesis 18:9-15
And they said unto him, where is Sarah thy wife?.... One of them put the question; and so the Septuagint version renders it, "and he said unto him", the principal of them, whom Abraham at first addressed and called him "my Lord", and was no other than the Son of God in an human form; and various things in the context show him to be...