Albert Barnes Commentary Ezekiel 38:8

"After many days thou shalt be visited: in the latter years thou shalt come into the land that is brought back from the sword, that is gathered out of many peoples, upon the mountains of Israel, which have been a continual waste; but it is brought forth out of the peoples, and they shall dwell securely, all of them." — Ezekiel 38:8 (ASV)

As Gog was drawn on to his attack upon Israel for his ultimate ruin, therefore his preparations were the first step in his visitation from the Almighty.

After many days – For "many days." For many long days the hand of God will be upon you, drawing you on to your ruin, and in the latter days you will come.

The land – Literally, a "land" once laid waste by the sword, but now delivered from it, whose inhabitants, once scattered, have been gathered together from many peoples.

Always – Rather, for a long time. The mountains were, at the time of Gog’s advance, again cultivated and populous.

And they shall dwell – Rather, and they dwell. It is a description of the actual condition at the time of Gog’s invasion . Such was the condition of the restored Jews in their prosperous days, after which came invasion. Such will be the condition of the Church before the final conflict between good and evil.