Romans 8:29

For whom he foreknew, he also predestinated to be conformed to the likeness of his Son, that he may be a first-born among many brothers;

Hebrews 12:23

and to the church of the first-born who are enrolled in heaven, and to a judge the God of all, and to spirits of the righteous 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 to be conformed to the likeness of his Son, that he may be a first-born among many brothers;
Hebrews 12:23
and to the church of the first-born who are enrolled in heaven, and to a judge the God of all, and to spirits of the righteous made perfect,