Romans 8:29

For whom he foreknew, he also predestinated, conformable to the image of his Son, that he might be the first-born among many brethren.

Hebrews 12:23

and to an innumerable company, To the general assembly of angels, and to the church of the first born, who are inrolled in heaven, and to God the Judge of all, and to the spirits of just men made perfect,

Treasury of Scripture Knowledge

Summary

Now the sons of Caleb the brother of Jerahmeel were, Mesha his firstborn, which was the father of Ziph; and the sons of Mareshah the father of Hebron.

His first-born

Bible References

His first-born

Romans 8:29
For whom he foreknew, he also predestinated, conformable to the image of his Son, that he might be the first-born among many brethren.
Hebrews 12:23
and to an innumerable company, To the general assembly of angels, and to the church of the first born, who are inrolled in heaven, and to God the Judge of all, and to the spirits of just men made perfect,