Joel
Joel 3:20BSB·traditional attribution

But Judah will be inhabited forever, and Jerusalem from generation to generation.

John Calvin Reformed @genevareformer

God here testifies that his redemption would not be for a short time, but that its fruit would be for a long, period, yea, perpetual: for it would be but a small thing for the Church to be redeemed, except God kept it safe under his own power.

Matthew Henry Presbyterian @wholebiblehenry

These promises with which this prophecy concludes have their accomplishments in part in the kingdom of grace, and the comforts and graces of all the faithful subjects of that kingdom, but will have their full accomplishment in the kingdom of glory; for, as to the Jewish church, we know not of any event concerning that which answers to the extent of these promises, and what...

Commenting on Joel 3:18-21

John Gill Reformed Baptist @doctorgill

But Judah shall dwell for ever,.... The converted Jews shall dwell in their own land for ever, to the end of the, world and never more be carried captive, Eze 37:25; and the true professing people of God, as Judah signifies, shall continue in a church state, evermore, and never more be disturbed by any enemies, they shall dwell safely and peaceably to the end...