John Gills Exposition of the Bible Commentary - Genesis 18:10
And he said ,.... The same that put the question, Jehovah himself, as appears by what follows: I will certainly return unto thee according to the time of life ; not by a personal appearance as now, but by the fulfilment of his promise which he had before given to Abraham, that he should have a son by Sarah, and now renews it; and this would be about the same time in the next year, perhaps at the spring of the year, which may be called "a time of life", when all things revive, which in... read more
Matthew Henry's Complete Commentary - Genesis 18:9-15
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, Matt. 10:41. I. Care is taken that Sarah should be within hearing. She must conceive by faith, and therefore the promise must be made to her, Heb. 11:11. It was the modest usage of that time that the women did not sit at... read more