Revelation 10:6

“And sware by him that liveth for ever and ever, etc.] That is, by the living God, who is the true God: and is so described to distinguish him from idol gods, who have no life nor breath in them; and to assert the excellency and perfection of his nature, who has life in himself originally, and independently, is the fountain of life to all creatures living, and who are supported in their life and being by him; and so he always was, is, and ever will be; this is the same as swearing by Ancuialus f304: who created heaven, and the things that therein are; the airy, starry, and third heavens, and the inhabitants of them, the fowls of the air, the sun, moon, and stars, and the angels of heaven, as…”

“liveth for ever and ever--Greek, "liveth unto the ages of the ages" (compare Dan 12:7). created heaven . . . earth . . . sea, &c.--This detailed designation of God as the Creator, is appropriate to the subject of the angel's oath, namely, the consummating of the mystery of God (Rev 10:7), which can surely be brought to pass by the same Almighty power that created all things, and by none else. that there should be time no longer--Greek, "that time (that is, an interval of time) no longer shall be." The martyrs shall have no longer a time to wait for the accomplishment of their prayers for the purgation of the earth by the judgments which shall remove their and God's foes from it (Rev 6:11).…”

“And sware by him that liveth forever and ever - By the ever-living God: a form of an oath in extensive use now. The essential idea in such an oath is an appeal to God; a solemn reference to Him as a witness; an utterance in the presence of Him who is acquainted with the truth or falsehood of what is said, and who will punish him who appeals to him falsely. It is usual, in such an oath, in order to give to it greater solemnity, to refer to some attribute of God, or something in the divine character on which the mind would rest at the time, as tending to make it more impressive. Thus, in the passage before us, the reference is to God as “ever-living”; that is, he is now a witness, and he ever…”

“And sware - The six preceding trumpets pass without any such solemnity. It is the trumpet of the seventh angel alone which is confirmed by so high an oath. By him that liveth for ever and ever - Before whom a thousand years are but a day. Who created the heaven, the earth, the sea, and the things that are therein - And, consequently, has the sovereign power over all: therefore, all his enemies, though they rage a while in heaven, on the sea, and on the earth, yet must give place to him. That there shall be no more a time - "But in the days of the voice of the seventh angel, the mystery of God shall be fulfilled:" that is, a time, a chronos, shall not expire before that mystery is fulfilled.…”