Revelation 13:18

Here is wisdom: let him who has understanding, compute the number of the beast; for it is the number of a man; and its number is six hundred and sixty-six.

Revelation 21:17

And he measured its wall, one hundred and forty-four cubits, according to the measure of a man, that is, of an 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: let him who has understanding, compute the number of the beast; for it is the number of a man; and its number is six hundred and sixty-six.
Revelation 21:17
And he measured its wall, one hundred and forty-four cubits, according to the measure of a man, that is, of an angel.