Although the angels remained angels even in their human disguise, nevertheless the personality of Abraham was so exalted that in his presence the archangels felt insignificant.
After the meal the angels asked after Sarah, though they knew that she was in retirement in her tent, but it was proper for them to pay their respects to the lady of the house and send her the cup of wine over which the blessing had been said. Michael, the greatest of the angels, thereupon announced the birth of Isaac. He drew a line upon the wall, saying, "When the sun crosses this point, Sarah will be with child, and when he crosses the next point, she will give birth to a child." This communication, which was intended for Sarah and not for Abraham, to whom the promise had been revealed long before, the angels made at the entrance to her tent, but Ishmael stood between the angel and Sarah, for it would not have been seemly to deliver the message in secret, with none other by. Yet, so radiant was the beauty of Sarah that a beam of it struck the angel, and made him look up. In the act of turning toward her, he heard her laugh within herself: "Is it possible that these bowels can yet bring forth a child, these shrivelled breasts give suck? And though I should be able to bear, yet is not my lord Abraham old?