Revelation 13:18

(Here there is need for discernment.) Let him who has the ability compute the number of the Beast; for the number indicates a man's name. Its number is six hundred and sixty-six.

Revelation 17:9

(Here there is need for the discerning mind.) The seven heads are seven mountains upon which the woman is seated.

Revelation 21:17

Then he measured the wall; it was two hundred and eighty-eight feet, as men measure, that is as the angel measured.

Revelation 15:2

Then I saw what appeared to be a sea of glass mixed with fire; and, standing by this sea of glass, holding the harps of God, I saw those who had come victorious out of the conflict with the Beast and its image and the number that formed its name.

Mark 13:14

As soon, however, as you see 'the Foul Desecration' standing where he ought not" (the reader must consider what this means) "then those of you who are in Judea must take refuge in the mountains;

Romans 3:5

But what if our wrong-doing makes God's righteousness all the clearer? Will God be wrong in inflicting punishment? (I can but speak as a man.) Heaven forbid!

Revelation 1:3

Blessed is he who reads, and blessed are they who listen to, the words of this prophecy, and lay to heart what is here written; for The Time is near.

Treasury of Scripture Knowledge

Summary

Here is wisdom. Let him that hath understanding count the number of the beast: for it is the number of a man; and his number is Six hundred threescore and six.

Bible References

Here

Revelation 1:3
Blessed is he who reads, and blessed are they who listen to, the words of this prophecy, and lay to heart what is here written; for The Time is near.
Revelation 17:9
(Here there is need for the discerning mind.) The seven heads are seven mountains upon which the woman is seated.
Mark 13:14
As soon, however, as you see 'the Foul Desecration' standing where he ought not" (the reader must consider what this means) "then those of you who are in Judea must take refuge in the mountains;

Count

Revelation 15:2
Then I saw what appeared to be a sea of glass mixed with fire; and, standing by this sea of glass, holding the harps of God, I saw those who had come victorious out of the conflict with the Beast and its image and the number that formed its name.