Romans 8:29
Because whom he did foreknow, he did also predestinate to be conformed to the image of his Son, in order that he might be the firstborn among many brethren:
Hebrews 12:23
to the whole company, and to the church of the first-born, who have been written in the heavens, and to God the Judge of all, and to the spirits of justified people who have been made perfect,
Treasury of Scripture Knowledge
Summary
All the firstling males that come of thy herd and of thy flock thou shalt sanctify unto the LORD thy God: thou shalt do no work with the firstling of thy bullock, nor shear the firstling of thy sheep.
The firstling
Bible References
The firstling
Romans 8:29
Because whom he did foreknow, he did also predestinate to be conformed to the image of his Son, in order that he might be the firstborn among many brethren:
Hebrews 12:23
to the whole company, and to the church of the first-born, who have been written in the heavens, and to God the Judge of all, and to the spirits of justified people who have been made perfect,