Romans 8:29

For those on whom He set His heart beforehand He marked off as His own to be made like His Son, that He might be the eldest of many brothers;

Hebrews 12:23

to the festal gathering and assembly of God's firstborn sons enrolled as citizens in heaven, to a Judge who is the God of all, to the spirits of upright men who have attained perfection,

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 those on whom He set His heart beforehand He marked off as His own to be made like His Son, that He might be the eldest of many brothers;
Hebrews 12:23
to the festal gathering and assembly of God's firstborn sons enrolled as citizens in heaven, to a Judge who is the God of all, to the spirits of upright men who have attained perfection,