וַיַּ֣רְא אַהֲרֹ֔ן וַיִּ֥בֶן מִזְבֵּ֖חַ לְפָנָ֑יו וַיִּקְרָ֤א אַֽהֲרֹן֙ וַיֹּאמַ֔ר חַ֥ג לַיהוָ֖ה מָחָֽר׃
Aaron sah das und baute einen Altar vor ihm, und Aaron rief und sprach: Ein Fest dem Herrn ist morgen!
Targum Jonathan on Exodus
For Aharon had seen Hur slain before him, and was afraid; and he builded an altar before him, and Aharon cried with doleful voice, and said, Let there be a feast before the Lord tomorrow, of the sacrifice of the slain of these adversaries who have denied their Lord, and have changed the glory of the Shekinah of the Lord for this calf.
Targum Jerusalem
And Aharon saw Hur slain before him, and was afraid; and he builded an altar before him, and Aharon cried and said, A feast.