2 Thessalonians 2:7

For the mystery of lawlessness is already at work; only there is one who is hindering and will continue to hinder till he be removed;

Revelation 17:5

Upon her forehead a name was written, a mystery, "BABYLON THE GREAT, THE MOTHER OF HARLOTS, AND ABOMINABLE THINGS OF THE EARTH."

Revelation 17:7

And the angel said to me. "Why did you wonder? I will explain to you the mystery of the woman, and of the beast with the seven heads and ten horns, that carried her.

1 John 2:18

My children, this is the last hour, and as you have heard that an antichrist was coming, and now many antichrists are already risen, whence we may know that it is the last hour.

1 John 4:3

and every spirit which confesses him not, is not from God. And this is that spirit of Antichrist of which you have heard that it is coming, and that now it is already in the world.

Acts 20:29

I know that after my departure fierce wolves will come among you, and they will not spare the flock;

Colossians 2:18-23

Let no man at his will defraud you of your prize through his false humility and worship of the angels, taking his stand on the visions he has seen, and vainly puffed up by his material mind;

1 Timothy 3:16

Yes! without contradiction, great is the mystery of godliness!

2 Timothy 2:17-18

and their teaching will spread like a gangrene.

Treasury of Scripture Knowledge

Summary

For the mystery of iniquity doth already work: only he who now letteth will let, until he be taken out of the way.

Bible References

The mystery

1 Timothy 3:16
Yes! without contradiction, great is the mystery of godliness!
Revelation 17:5
Upon her forehead a name was written, a mystery, "BABYLON THE GREAT, THE MOTHER OF HARLOTS, AND ABOMINABLE THINGS OF THE EARTH."

Doth

Acts 20:29
I know that after my departure fierce wolves will come among you, and they will not spare the flock;
Colossians 2:18
Let no man at his will defraud you of your prize through his false humility and worship of the angels, taking his stand on the visions he has seen, and vainly puffed up by his material mind;
2 Timothy 2:17
and their teaching will spread like a gangrene.
1 John 2:18
My children, this is the last hour, and as you have heard that an antichrist was coming, and now many antichrists are already risen, whence we may know that it is the last hour.
1 John 4:3
and every spirit which confesses him not, is not from God. And this is that spirit of Antichrist of which you have heard that it is coming, and that now it is already in the world.

He who

2 Thessalonians 2:6
And now you know what is holding him back, to the end that he may be revealed in his appointed time.