וַיְהִ֖י הַיּ֑וֹם וּבָנָ֨יו וּבְנֹתָ֤יו אֹֽכְלִים֙ וְשֹׁתִ֣ים יַ֔יִן בְּבֵ֖ית אֲחִיהֶ֥ם הַבְּכֽוֹר׃
And it fell on a day when his sons and his daughters were eating and drinking wine in their eldest brother’s house,
Read midrashic interpretation of Job 1:13: and classical rabbinic exegesis.