Ambrose of Milan
When his son-in-law sought to depart, he detained him even on the fourth day, expressing his goodwill and longing to retain him.
But on the fourth day, arising early in the morning, he desired to depart. But his father in law kept him, and said to him: Taste first a little bread, and strengthen thy stomach, and so thou shalt depart.
וַֽיְהִי֙ בַּיּ֣וֹם הָרְבִיעִ֔י וַיַּשְׁכִּ֥ימוּ בַבֹּ֖קֶר וַיָּ֣קָם לָלֶ֑כֶת וַיֹּאמֶר֩ אֲבִ֨י הַֽנַּעֲרָ֜ה אֶל־חֲתָנ֗וֹ סְעָ֧ד לִבְּךָ֛ פַּת־לֶ֖חֶם וְאַחַ֥ר תֵּלֵֽכוּ׃
One Church Father comments on this verse
When his son-in-law sought to depart, he detained him even on the fourth day, expressing his goodwill and longing to retain him.
Passages read together with this verse.