Verses with the word pen in the Old Testament (6 verses):

Judges 5:14
Out of Ephraim was there a root of them against Amalek; after thee, Benjamin, among thy people; out of Machir came down governors, and out of Zebulun they that handle the pen of the writer.

Job 19:24
That they were graven with an iron pen and lead in the rock for ever!

Psalms 45:1
My heart is inditing a good matter: I speak of the things which I have made touching the king: my tongue is the pen of a ready writer.

Isaiah 8:1
Moreover the LORD said unto me, Take thee a great roll, and write in it with a man's pen concerning Mahershalalhashbaz.

Jeremiah 8:8
How do ye say, We are wise, and the law of the LORD is with us? Lo, certainly in vain made he it; the pen of the scribes is in vain.

Jeremiah 17:1
The sin of Judah is written with a pen of iron, and with the point of a diamond: it is graven upon the table of their heart, and upon the horns of your altars;