Revelation 10:2-7

He had a little scroll open in his hand. And he set his right foot on the sea, and his left foot on the land, and called out with a loud voice, like a lion roaring. When he called out, the seven thunders sounded. And when the seven thunders had sounded, I was about to write, but I heard a voice from heaven saying, “Seal up what the seven thunders have said, and do not write it down.” And the angel whom I saw standing on the sea and on the land raised his right hand to heaven and swore by him who lives forever and ever, who created heaven and what is in it, the earth and what is in it, and the sea and what is in it, that there would be no more delay, but that in the days of the trumpet call to be sounded by the seventh angel, the mystery of God would be fulfilled, just as he announced to his servants the prophets.