I saw the Lord. The prophet is given a glimpse of the Majesty of heaven, here depicted as ready to punish His rebellious people (see Isa. 6:1; Eze. 10:1).
The altar. Some interpret this “altar” as that of the calf worship at Bethel, the Lord placing Himself by it for the purposes of condemnation and judgment. Others hold that, since there was more than one altar at Bethel (eh. 3:14), here the altar of burnt offering at Jerusalem is meant.
Smite. This is probably addressed to a destroying angel (see 2 Sam. 24:15, 16; 2 Kings 19:35).
Lintel of the door. Heb. kaphtor. The word is used to describe the knob, “knop” (KJV), of the lampstand in the ancient sanctuary (Ex. 25:31, 33). Here kaphtor probably describes a capital, perhaps of a pillar.
Posts. Heb. sippim, “thresholds,” or “sills.” This smiting was to be of such force that the structure of the building would be loosened and weakened, the thresholds shaken, and the structure destroyed.
Cut them. The falling structure is pictured as injuring or killing the people with its falling ruins.
Last of them. That is, those who shall survive this destruction. They will have no prospect of escape, for they will be slain with the sword.