Revelation 10:1-7

Then I saw another mighty angel coming down from heaven, clothed in a cloud, with a rainbow (halo) over his head; and his face was like the sun, and his feet (legs) were like columns of fire; [Ex 13:21, 22; Ezek 1:26-28; Dan 7:13; Matt 17:2] and he had a little book (scroll) open in his hand. He set his right foot on the sea and his left foot on the land; [Ezek 2:9; Hos 11:10] and he shouted with a loud voice, like the roaring of a lion [compelling attention and inspiring awe]; and when he had shouted out, the seven peals of thunder spoke with their own voices [uttering their message in distinct words]. [Ps 29] And when the seven peals of thunder had spoken, I was about to write; but I heard a voice from heaven saying, “Seal up the things which the seven peals of thunder have spoken and do not write them down.” [2 Cor 12:4] Then the angel whom I had seen standing on the sea and the land raised his right hand [to swear an oath] to heaven, [Deut 32:40; Dan 12:6, 7] and swore [an oath] by [the name of] Him who lives forever and ever, WHO CREATED HEAVEN AND THE THINGS IN IT, AND THE EARTH AND THE THINGS IN IT, AND THE SEA AND THE THINGS IN IT, that there will be delay no longer, [Neh 9:6] but when it is time for the trumpet call of the seventh angel, when he is about to sound, then the mystery of God [that is, His hidden purpose and plan] is finished, as He announced the gospel to His servants the prophets. [Dan 12:6; Rom 11:25; 1 Cor 15:55; 2 Thess 2:7]