Revelation 13:18

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 sixty six.

Revelation 21:17

he measured the wall, and it was an hundred and forty four cubits, according to the common measure, which was what the angel employed.

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 that hath understanding count the number of the beast: for it is the number of a man; and his number is six hundred sixty six.
Revelation 21:17
he measured the wall, and it was an hundred and forty four cubits, according to the common measure, which was what the angel employed.