John the Apostle
Revelation 7:5ESV·traditional attribution

12,000 from the tribe of Judah were sealed, 12,000 from the tribe of Reuben, 12,000 from the tribe of Gad,

Matthew Henry Presbyterian @wholebiblehenry

Here we have, I. An account of the restraint laid upon the winds. By these winds we suppose are meant those errors and corruptions in religion which would occasion a great deal of trouble and mischief to the church of God.

Commenting on Revelation 7:1-12

John Gill Reformed Baptist @doctorgill

Of the tribe of Judah were sealed twelve thousand,.... Judah is mentioned first, because Christ sprung from that tribe, and the pure worship of God was preserved in it; and that itself was preserved a distinct tribe until the coming of Shiloh; its name signifies "praise God", Gen 29:35; and shows, that it becomes all the sealed ones, all true believers, and every member of...

Albert Barnes Presbyterian @notesbybarnes

Verses 5-8. Of the tribe of Juda were sealed twelve thousand. That is, a selection was made, or a number sealed, as if it had been made from one of the tribes of the children of Israel--the tribe of Judah.