Exodus 28:21

The [engraved] stones shall be twelve, according to the names of [the twelve tribes of] the sons of Israel; they shall be like the engravings of a signet, each with its name for the twelve tribes.

Revelation 7:4-8

And I heard how many were sealed, a hundred and forty-four thousand; [twelve thousand] sealed from every tribe of the sons of Israel:

Revelation 21:12

It had a massive and high wall, with twelve [large] gates, and at the gates [were stationed] twelve angels; and on the gates the names of the twelve tribes of the sons of Israel were written.

1 Kings 18:31

Then Elijah took twelve stones in accordance with the number of the tribes of the sons of Jacob, to whom the word of the Lord had come, saying, “Israel shall be your name.”

Luke 22:30

that you may eat and drink at My table in My kingdom, and you will sit on thrones judging the twelve tribes of Israel.

James 1:1

James, a bond-servant of God and of the Lord Jesus Christ,

To the twelve [Hebrew] tribes [scattered abroad among the Gentiles] in the dispersion: Greetings (rejoice)!

Treasury of Scripture Knowledge

Summary

And the stones shall be with the names of the children of Israel, twelve, according to their names, like the engravings of a signet; every one with his name shall they be according to the twelve tribes.

Twelve

General references

Bible References

Twelve

Exodus 28:9
You shall take two onyx stones and engrave on them the names of the [twelve] sons of Israel,

According to the twelve

1 Kings 18:31
Then Elijah took twelve stones in accordance with the number of the tribes of the sons of Jacob, to whom the word of the Lord had come, saying, “Israel shall be your name.”
Luke 22:30
that you may eat and drink at My table in My kingdom, and you will sit on thrones judging the twelve tribes of Israel.
James 1:1
James, a bond-servant of God and of the Lord Jesus Christ,

To the twelve [Hebrew] tribes [scattered abroad among the Gentiles] in the dispersion: Greetings (rejoice)!
Revelation 7:4
And I heard how many were sealed, a hundred and forty-four thousand; [twelve thousand] sealed from every tribe of the sons of Israel:
Revelation 21:12
It had a massive and high wall, with twelve [large] gates, and at the gates [were stationed] twelve angels; and on the gates the names of the twelve tribes of the sons of Israel were written.

General references

Exodus 35:9
and onyx stones and other stones to be set for the ephod and the breastpiece.