Matthew Henry on Ezekiel 9:1-4

It is a great comfort to believers, that in the midst of destroyers and destructions, there is a Mediator, a great High Priest, who has an interest in heaven, and in whom saints on earth have an interest. The representation of the Divine glory from above the ark, removed to the threshold, denoted that the Lord was about to leave his mercy-seat, and to pronounce judgment on the people. The distinguishing character of this remnant that is to be saved, is such as sigh and cry to God in prayer, because of the abominations in Jerusalem. Those who keep pure in times of general wickedness, God will keep safe in times of general trouble and distress.