Revelation 10:6-8

Amplified Bible

⁶ 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,^{(A) 7} but ^[a]when it is time for the ^[b]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.^(B)

⁸ Then the voice which I heard from heaven, I heard again speaking to me, and saying, “Go, take the book (scroll) which is open in the hand of the angel who is standing on the sea and on the land.”