'Gates' in the Bible

(Dalet) The roads to Zion mourn because no one travels to the festivals. All her city gates are deserted; her priests groan. Her virgins grieve; she is in bitter anguish!

(Tet) Her city gates have fallen to the ground; he smashed to bits the bars that lock her gates. Her king and princes were taken into exile; there is no more guidance available. As for her prophets, they no longer receive a vision from the Lord.

(Lamed) Neither the kings of the earth nor the people of the lands ever thought that enemy or foe would enter the gates of Jerusalem.