No strangers pass through her. — Strangers signify the aliens who had hitherto oppressed. They are like the spots and wrinkles which would defile the bride — the Church of God.
Related Commentaries of Joel 3:17
Joel 3:17
17 So shall ye know that I am the LORD your God dwelling in Zion, my holy mountain: then shall Jerusalem be holy,f and there shall no strangers pass through her any more.