Revelation 10:7

but in the days of the voice of the seventh angel, when he is about to sound, the mystery of God was also finished, according to the good news He proclaimed to His servants the prophets.

Romans 16:25

Now to Him Who is able to establish you, according to my Gospel and the proclamation of Jesus Christ, according to the revelation of the mystery kept in silence during eternal ages,

Romans 16:25

Now to Him Who is able to establish you, according to my Gospel and the proclamation of Jesus Christ, according to the revelation of the mystery kept in silence during eternal ages,

Luke 24:44-47

And He said to them, "These are My words which I spake to you, while being yet with you: that all things must be fulfilled, that have been written in the law of Moses, and the prophets, and the Psalms, concerning Me."

Acts 3:21

Whom Heaven must retain, until the times of restoration of all things of which God spake through the mouth of all His holy prophets from the beginning.

Romans 11:25

For I do not wish you, brethren, to be ignorant of this mystery (lest ye be wise in your own conceits), that a hardening, in part, has befallen Israel, until the fulness of the gentiles come in;

Ephesians 3:3-9

that by revelation was made known to me the mystery, as I wrote before in brief;

Revelation 11:15-18

And the seventh angel sounded; and there followed great voices in Heaven, saying, "The kingdom of the world became our Lord's and His Christ's; and He will reign forever and ever."

Treasury of Scripture Knowledge

Summary

But in the days of the voice of the seventh angel, when he shall begin to sound, the mystery of God should be finished, as he hath declared to his servants the prophets.

Bible References

In the

Revelation 11:15
And the seventh angel sounded; and there followed great voices in Heaven, saying, "The kingdom of the world became our Lord's and His Christ's; and He will reign forever and ever."

The mystery

Romans 11:25
For I do not wish you, brethren, to be ignorant of this mystery (lest ye be wise in your own conceits), that a hardening, in part, has befallen Israel, until the fulness of the gentiles come in;
Romans 16:25
Now to Him Who is able to establish you, according to my Gospel and the proclamation of Jesus Christ, according to the revelation of the mystery kept in silence during eternal ages,
Ephesians 3:3
that by revelation was made known to me the mystery, as I wrote before in brief;

As he

Luke 24:44
And He said to them, "These are My words which I spake to you, while being yet with you: that all things must be fulfilled, that have been written in the law of Moses, and the prophets, and the Psalms, concerning Me."
Acts 3:21
Whom Heaven must retain, until the times of restoration of all things of which God spake through the mouth of all His holy prophets from the beginning.