וְהָלְכ֤וּ בָנָיו֙ וְעָשׂ֣וּ מִשְׁתֶּ֔ה בֵּ֖ית אִ֣ישׁ יוֹמ֑וֹ וְשָׁלְח֗וּ וְקָרְאוּ֙ לִשְׁלֹ֣שֶׁת אחיתיהם [אַחְיֽוֹתֵיהֶ֔ם] לֶאֱכֹ֥ל וְלִשְׁתּ֖וֹת עִמָּהֶֽם׃
그 아들들이 자기 생일이면 각각 자기의 집에서 잔치를 베풀고 그 누이 셋도 청하여 함께 먹고 마시므로
Rashi
Now his sons would go and make a feast in each one’s house on his day In the house of each one on his day.
Rashi
and they would send and invite Heb. ושלחו וקראו, like ושולחים וקוראים, that they would do so constantly.
Malbim
6. Lest it be said that Job was punished for the sins of any of his household or because he did not censure them, we are told how punctiliously he supervised them, and sanctified and purified them from any sin: [He would rise early in the morning and offer burnt-offerings, one for each of them, for Job said: 'Perhaps my sons sinned'...]