Isaiah
Isaiah 66:21ESV·traditional attribution

And some of them also I will take for priests and for Levites, says the LORD.

Matthew Henry Presbyterian @wholebiblehenry

These verses, like the pillar of cloud and fire, have a dark side towards the enemies of God's kingdom and all that are rebels against his crown, and a bright side towards his faithful loyal subjects. Probably they refer to the Jews in captivity in Babylon, of whom some are said to have been sent thither for their hurt, and with them God here threatens...

Commenting on Isaiah 66:15-24

John Gill Reformed Baptist @doctorgill

And I will also take of them for priests,.... That is, of the Gentiles, the brethren brought as an offering to the Lord; and therefore must respect Gospel times, when the Aaronic priesthood would be changed and cease, which admitted not of Gentiles, nor any of any other tribe in Israel, but the tribe of Levi; nor is this to be understood of the spiritual...

Jamieson-Fausset-Brown Reformed @jfbcommentary

of them--the Gentiles. priests . . . Levites--for spiritual worship: enjoying the direct access to God which was formerly enjoyed by the ministers of the temple alone (Pe1 2:9; Rev 1:6).