2 Thessalonians 2:7

For the mystery of lawlessness doth already work: only there is one that restraineth now, until he be taken out of the way.

Revelation 17:5

and upon her forehead a name written, MYSTERY, BABYLON THE GREAT, THE MOTHER OF THE HARLOTS AND OF THE ABOMINATIONS OF THE EARTH.

Revelation 17:7

And the angel said unto me, Wherefore didst thou wonder? I will tell thee the mystery of the woman, and of the beast that carrieth her, which hath the seven heads and the ten horns.

1 John 2:18

Little children, it is the last hour: and as ye heard that antichrist cometh, even now have there arisen many antichrists; whereby we know that it is the last hour.

1 John 4:3

and every spirit that confesseth not Jesus is not of God: and this is the'spirit of the antichrist, whereof ye have heard that it cometh; and now it is in the world already.

Acts 20:29

I know that after my departing grievous wolves shall enter in among you, not sparing the flock;

Colossians 2:18-23

Let no man rob you of your prize by a voluntary humility and worshipping of the angels, dwelling in the things which he hath seen, vainly puffed up by his fleshly mind,

1 Timothy 3:16

And without controversy great is the mystery of godliness; He who was manifested in the flesh, Justified in the spirit, Seen of angels, Preached among the nations, Believed on in the world, Received up in glory.

2 Timothy 2:17-18

and their word will eat as doth a gangrene: or whom is Hymenaeus an Philetus;

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
And without controversy great is the mystery of godliness; He who was manifested in the flesh, Justified in the spirit, Seen of angels, Preached among the nations, Believed on in the world, Received up in glory.
Revelation 17:5
and upon her forehead a name written, MYSTERY, BABYLON THE GREAT, THE MOTHER OF THE HARLOTS AND OF THE ABOMINATIONS OF THE EARTH.

Doth

Acts 20:29
I know that after my departing grievous wolves shall enter in among you, not sparing the flock;
Colossians 2:18
Let no man rob you of your prize by a voluntary humility and worshipping of the angels, dwelling in the things which he hath seen, vainly puffed up by his fleshly mind,
2 Timothy 2:17
and their word will eat as doth a gangrene: or whom is Hymenaeus an Philetus;
1 John 2:18
Little children, it is the last hour: and as ye heard that antichrist cometh, even now have there arisen many antichrists; whereby we know that it is the last hour.
1 John 4:3
and every spirit that confesseth not Jesus is not of God: and this is the'spirit of the antichrist, whereof ye have heard that it cometh; and now it is in the world already.

He who

2 Thessalonians 2:6
And now ye know that which restraineth, to the end that he may be revealed in his own season.

American Standard Version Public Domain