'Gates' in the Bible

The roads to Zion are in mourningBecause no one comes to the appointed feasts.All her gates are desolate;Her priests are groaning,Her virgins are grieved and suffering,And she suffers bitterly.

Her gates have sunk into the ground;He has destroyed and broken her bars.Her king and her princes are [exiled] among the nations;The law is no more.Also, her prophets no longer findVision from the Lord.

The kings of the earth did not believe,Nor did any of the inhabitants of the earth,That the adversary (oppressor) and enemyCould enter the gates of Jerusalem.