Job 19:24

Oh that they were cut with an iron pen and lead in the rock forever!

Jeremiah 17:1

The sin of Judah is engraved with an iron stylus; it is carved on the tablet of the heart and on the horns of Your altar with the point of a diamond;

Exodus 28:11-12

With the work of an engraver in stone, like the engravings of a signet, you shall engrave the two stones with the names of the sons of Israel. You shall make them to be set in settings of gold.

Exodus 28:21

And the stones shall be with the names of the sons of Israel, twelve, according to their names, like the engravings of a signet. They shall be each one with his name according to the twelve tribes.

Exodus 32:16

And the tablets were the work of God, and the writing was the writing of God. It was engraved on the tablets.

Deuteronomy 27:2-3

And it will be, on the day when you shall pass over Jordan to the land which Jehovah your God gives you, you shall set up great stones and plaster them with plaster.

Deuteronomy 27:8

And you shall write all the words of this Law very plainly on the stones.

Treasury of Scripture Knowledge

Summary

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

General references

Bible References

Graven

Exodus 28:11
With the work of an engraver in stone, like the engravings of a signet, you shall engrave the two stones with the names of the sons of Israel. You shall make them to be set in settings of gold.
Exodus 32:16
And the tablets were the work of God, and the writing was the writing of God. It was engraved on the tablets.
Deuteronomy 27:2
And it will be, on the day when you shall pass over Jordan to the land which Jehovah your God gives you, you shall set up great stones and plaster them with plaster.
Jeremiah 17:1
The sin of Judah is engraved with an iron stylus; it is carved on the tablet of the heart and on the horns of Your altar with the point of a diamond;

General references

Deuteronomy 6:9
And you shall write them upon the posts of your house, and on your gates.
Jeremiah 30:2
So speaks Jehovah, the God of Israel, saying, Write all the Words that I have spoken to you in a book.