I saw the Lord standing beside the altar, and he said, "Strike the tops of the pillars, that the thresholds may shake; and break them in pieces on the head of all of them; and I will kill the last of them with the sword: there shall not one of them flee away, and there shall not one of them escape.
He says then that he saw God standing on the altar. The Prophet might have heard what follows without a vision; but God then, we know, was wont to sanction his predictions by visions, as we find in Numbers 12:6. God then not only intended to commit to his Prophet what he was to proclaim, but also to add authority to his doctrine; and the vision was as it were the seal, which the Israelites as well as the Jews knew to be a proof, that what the Prophet declared by his mouth proceeded from heaven. 