John Gill Commentary Isaiah 63:18

"Thy holy people possessed [it] but a little while: our adversaries have trodden down thy sanctuary." — Isaiah 63:18 (ASV)

The people of your holiness have possessed it but a little
while
Either the land of Canaan, which the Jews, the Lord's holy people, whom he had separated from others, possessed about fourteen hundred years, which was but a little while in comparison of "for ever", as was promised; or they enjoyed it but a little while in peace and quiet, being often disturbed by their neighbours; or else the sanctuary, the temple, as it is to be supplied from the next clause, which stood but little more than four hundred years: our adversaries have trodden down your sanctuary; the temple; the first temple was destroyed by Nebuchadnezzar; and the second temple by the Romans; and Antiochus, and Pompey, and others, profaned it, by treading in it.