וְהוֹשַׁעְתִּ֣י אֶתְכֶ֔ם מִכֹּ֖ל טֻמְאֽוֹתֵיכֶ֑ם וְקָרָ֤אתִי אֶל־הַדָּגָן֙ וְהִרְבֵּיתִ֣י אֹת֔וֹ וְלֹא־אֶתֵּ֥ן עֲלֵיכֶ֖ם רָעָֽב׃
我必拯救你們脫離一切的不潔；我必命令五穀，使它增多，不再使饑荒臨到你們。
Da'at Zekenim
ויהי ביום השמיני קרא משה לאהרן ובניו, “it was on the eighth day when Moses called Aaron and his sons, etc.”; we find the expression קרא being used for inviting someone to eat in order to satiate himself, as in Ezekiel 36,29: וקראתי אל הדגן והרביתי אותו, “I will summon (call) the grain and make it abundant;” we find the same expression used in connection with famine, as in Kings II 8,1: כי קרא ה' לרעב, “for the Lord has decreed a seven year famine on the land.” We find that expression when someone is chosen for greatness, as when G–d chose Moses and Aaron for such positions, G–d having told Moses to call his brother Aaron in Exodus 4,14 and his telling him that he rejoices over his appointment. We now find it here where Moses is called upon to make the appointment of Aaron and his sons as priests public knowledge.