2 Thessalonians 2:7

For the mystery of iniquity already worketh; only he that with-holdeth will with-hold, till he be taken out of the way.

Revelation 17:5

And on her forehead a name written, Mystery; Babylon the Great, the mother of harlots, and abominations of the earth.

Revelation 17:7

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

1 John 2:18

Little children, it is the last time: and as ye have heard that Antichrist cometh, so even now there are many Antichrists, whereby we know that it is the last time.

1 John 4:3

And every spirit which confesseth not Jesus Christ come in the flesh, is not of God: and this is that spirit of Antichrist, whereof ye have heard that it should come; and now already it is in the world.

Acts 20:29

For I know this, that after my departure grievous wolves will enter in among you, not sparing the flock.

Colossians 2:18-23

Let none defraud you of your reward by a voluntary humility and worship of angels, intruding into the things which he hath not seen, vainly puffed up by his fleshly mind,

1 Timothy 3:16

The mystery of godliness is the pillar and ground of the truth, and without controversy a great thing: God was manifested in the flesh, was justified by the spirit, seen by angels, preached among the Gentiles, believed on in the world, taken up into glory.

2 Timothy 2:17-18

And their word will eat as a gangrene; of whom are Hymeneus and 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
The mystery of godliness is the pillar and ground of the truth, and without controversy a great thing: God was manifested in the flesh, was justified by the spirit, seen by angels, preached among the Gentiles, believed on in the world, taken up into glory.
Revelation 17:5
And on her forehead a name written, Mystery; Babylon the Great, the mother of harlots, and abominations of the earth.

Doth

Acts 20:29
For I know this, that after my departure grievous wolves will enter in among you, not sparing the flock.
Colossians 2:18
Let none defraud you of your reward by a voluntary humility and worship of angels, intruding into the things which he hath not seen, vainly puffed up by his fleshly mind,
2 Timothy 2:17
And their word will eat as a gangrene; of whom are Hymeneus and Philetus,
1 John 2:18
Little children, it is the last time: and as ye have heard that Antichrist cometh, so even now there are many Antichrists, whereby we know that it is the last time.
1 John 4:3
And every spirit which confesseth not Jesus Christ come in the flesh, is not of God: and this is that spirit of Antichrist, whereof ye have heard that it should come; and now already it is in the world.

He who

2 Thessalonians 2:6
And now ye know that which with-holdeth, that he may be revealed in his time.