Jamieson, Fausset and Brown on Ezekiel 10:18

18. The departure of the symbol of God's presence from the temple preparatory to the destruction of the city. Foretold in De 31:17. Woe be to those from whom God departs (Ho 9:12)! Compare 1Sa 28:15, 16; 4:21: "I-chabod, Thy glory is departed." Successive steps are marked in His departure; so slowly and reluctantly does the merciful God leave His house. First He leaves the sanctuary (Eze 9:3); He elevates His throne above the threshold of the house (Eze 10:1); leaving the cherubim He sits on the throne (Eze 10:4); He and the cherubim, after standing for a time at the door of the east gate (where was the exit to the lower court of the people), leave the house altogether (Eze 10:18, 19), not to return till Eze 43:2.