In the day that thou stoodest on the other side - The time when they so stood, is not defined in itself, as a past or future. It is literally; “In the day of thy standing over against,” i. e., to gaze on the calamities of God’s people; “in the day of strangers carrying away his strength,” i. e., “the strength of thy brother Jacob,” of whom he had just spoken, “and foreigners entered into his gates, and cast lots on Jerusalem, thou too as one of them. One of them” they were not. Edom was no stranger, no alien, no part of the invading army; he whose strength they carried away, was, he had just said, his “brother Jacob.” Edom burst the bonds of nature, to become what he was not, “as one of them.” He purposely does not say, “thou too wast (הית hayı̂tha) as of them;” as he would have said, had he wished to express what was past. Obadiah seeing, in prophetic vision, the destruction of Jerusalem, and the share which the Edomites took there at, describes it as it is before his eyes, as past.
We see before us, the enemy carrying off all in which the human strength of Judah lay, his forces and his substance, and casting lots on Jerusalem its people and its possessions. He describes it as past, yet, not more so, than the visitation itself which was to follow, some centuries afterward. Of both, he speaks alike as past; of both, as future. He speaks of them as past, as being so beheld in “His” mind in whose name he speaks. God’s certain knowledge does not interfere with our free agency. “God compelleth no one to sin; yet, foreseeth all who shall sin of their own will. How then should He not justly avenge what, foreknowing, He does not compel them to do? For as no one, by his memory, compelleth to be done things which pass, so God, by His foreknowledge, doth not compel to be done things which will be. And as man remembereth some things which he hath done, and yet, hath not done all which he remembereth; so God foreknoweth all things whereof He is Himself the Author, and yet, is not Himself the Author of all which He foreknoweth. Of those things then, of which He is no evil Author, He is the just Avenger.