'First born' in the Bible

And knew her not till she had brought forth her firstborn son: and he called his name JESUS.

And she brought forth her firstborn son, and wrapped him in swaddling clothes, and laid him in a manger; because there was no room for them in the inn.

(just as it is written in the law of the Lord: Every firstborn male will be dedicated to the Lord)

For whom he did foreknow, he also did predestinate to be conformed to the image of his Son, that he might be the firstborn among many brethren.

Who is the image of the invisible God, the firstborn of every creature:

And he is the head of the body, the church: who is the beginning, the firstborn from the dead; that in all things he might have the preeminence.

When He again brings His firstborn into the world, He says, And all God’s angels must worship Him.

Through faith he kept the passover, and the sprinkling of blood, lest he that destroyed the firstborn should touch them.

To the general assembly and church of the firstborn, which are written in heaven, and to God the Judge of all, and to the spirits of just men made perfect,

and from Jesus Christ, the faithful witness, the firstborn from the dead and the ruler of the kings of the earth.To Him who loves us and has set us free from our sins by His blood,