Numbers 16:5

בקר וידע וגו׳ TOMORROW THE LORD WILL MAKE KNOWN [WHO ARE HIS] — “Now (this hour of the day)” — he meant — “is a time of excessive drinking, and it is therefore not proper to appear before Him”. But his real intention in postponing the matter was that perhaps they might repent (abandon their opposition) (Midrash Tanchuma, Korach 5). 'בקר וידע ה את אשר לו TOMORROW THE LORD WILL MAKE KNOWN WHO ARE TO BE HIS for the Levitical service, ואת הקדוש AND HIM WHO IS HOLY enough for the priesthood, והקריב AND HE WILL BRING them אליו UNTO HIM. The Targum proves that this is so (i.e. that Scripture alludes to two different matters), for it renders the first phrase by “He will bring near to Him”, and the second by “He will bring near to His service”. — A Midrashic explanation of the word בקר (instead of the more usual מחר) is the following: Moses said to him (Korah): “The Holy One, blessed be He, has assigned bounds in His world; can you, perhaps, change the morning into evening? Just as little, will you be able to make this (Aaron’s appointment as High Priest) of none effect, — as indeed it states, (Genesis 1:5) “and it was evening and it was morning… (Genesis 1:4) “and God separated (ויבדל) [light from darkness]”; and in the same sense (that the separation should be of a permanent character) it states, (I Chronicles 23:13) “and Aaron was separated (ויבדל) that he should be sanctified [as most holy … to minister unto him]” (Midrash Tanchuma, Korach 5).

וַיְדַבֵּ֨ר אֶל־קֹ֜רַח וְאֶֽל־כׇּל־עֲדָתוֹ֮ לֵאמֹר֒ בֹּ֠קֶר וְיֹדַ֨ע יְהֹוָ֧ה אֶת־אֲשֶׁר־ל֛וֹ וְאֶת־הַקָּד֖וֹשׁ וְהִקְרִ֣יב אֵלָ֑יו וְאֵ֛ת אֲשֶׁ֥ר יִבְחַר־בּ֖וֹ יַקְרִ֥יב אֵלָֽיו׃

and he spoke to Qoraĥ and to all his company, saying, Tomorrow morning the Lord will show who is his, and who is holy; and will cause him to come near to him: even him whom he has chosen will he cause to come near to him.