John Chrysostom
This is the result of extraordinary love, this is the reward of heightened fervor, this is the recompense for Sarah's toil!
See Commentary. Psalm 48:17
And he said to him: I will return and come to thee at this time, life accompanying, and Sara, thy wife, shall have a son. Which when Sara heard, she laughed behind the door of the tent.
וַיֹּ֗אמֶר שׁ֣וֹב אָשׁ֤וּב אֵלֶ֙יךָ֙ כָּעֵ֣ת חַיָּ֔ה וְהִנֵּה־בֵ֖ן לְשָׂרָ֣ה אִשְׁתֶּ֑ךָ וְשָׂרָ֥ה שֹׁמַ֛עַת פֶּ֥תַח הָאֹ֖הֶל וְה֥וּא אַחֲרָֽיו׃
5 Church Fathers comment on this verse
This is the result of extraordinary love, this is the reward of heightened fervor, this is the recompense for Sarah's toil!
See Commentary. Psalm 48:17
After partaking of the feast provided by Abraham, they inquired about Sarah (Genesis 18:9). Despite her advanced years, Sarah maintained her modesty and stepped out from the inner part of the dwelling to the entrance. Through Abraham's attentiveness and the quietude that he instructed all within his home to uphold, his household understood that these were not ordinary visitors who simply sought the refreshment of the servant of God. Then the Lord spoke to Abraham and Sarah, saying, I will return to you at this appointed time, and Sarah will bear a son.
In place of 'hour' in the Hebrew version, we find 'life.' The implication is: 'I will come back to you in the season of life.' It is as though He is expressing, 'If I continue to live, if life is with me.' This is conveyed in a way that reflects human emotions, similar to many other instances in Scripture.
Did the Lord, who foretold the impending destruction of Sodom, not have knowledge of Sarah's whereabouts? He was aware, yet He intended to impart a lesson regarding the virtue of women's modesty, teaching them to refrain from attracting the attention of visitors through inappropriate behavior and instead to conduct themselves with propriety. Furthermore, Abraham speaks for your benefit, declaring that Sarah is inside the tent, so you may understand the qualities to seek in a wife. Even in her old age, Sarah maintains a modesty reminiscent of a young woman, which is why the Lord assured her of a son.
Simultaneously, the Hebrew phrase translates directly to the time of life. To clarify this expression, scholars relate it to Abraham and Sarah, their promised son, or even to the visitors themselves. However, it is essential to understand that these words reveal a peculiarity in the Hebrew language, which can be interpreted as through the duration of life or throughout the entire year (4 Sam. 4:16, 17). In Abraham's journey, we do not find that God returned to him in the same manner exactly one year after this divine encounter. Some believe this subsequent visit is realized in the fulfillment of the promise, specifically in the birth of Isaac.
Nonetheless, as John noted concerning the Gospel (John 20:30), there were many other miraculous acts performed by God before His chosen ones that are not recorded in these texts; rather, these specific accounts are provided so that you may believe.
Passages read together with this verse.