Revelation 13:18

Here is wisdom required; and let him, that hath understanding, compute the number of the beast: for it is the number of a man, and his number is six hundred sixty six.

Revelation 21:17

And he measured the wall of it an hundred forty four cubits according to the measure of a man, for such was that of the angel.

Treasury of Scripture Knowledge

Summary

Moreover the LORD said unto me, Take thee a great roll, and write in it with a man's pen concerning Mahershalalhashbaz.

Bible References

A man's pen

Revelation 13:18
Here is wisdom required; and let him, that hath understanding, compute the number of the beast: for it is the number of a man, and his number is six hundred sixty six.
Revelation 21:17
And he measured the wall of it an hundred forty four cubits according to the measure of a man, for such was that of the angel.