'First born' in the Bible

and knew her not until she had brought forth her firstborn son: and he called his name Jesus.

and she brought forth her first-born son, and wrapped him up in swaddling-clothes and laid him in the manger, because there was no room for them in the inn.

Because whom he has foreknown, he has also predestinated to be conformed to the image of his Son, so that he should be the firstborn among many brethren.

who is image of the invisible God, firstborn of all creation;

And he is the head of the body, the assembly; who is the beginning, firstborn from among the dead, that he might have the first place in all things:

and again, when he brings in the firstborn into the habitable world, he says, And let all God's angels worship him.

By faith he celebrated the passover and the sprinkling of the blood, that the destroyer of the firstborn might not touch them.

the universal gathering; and to the assembly of the firstborn who are registered in heaven; and to God, 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 prince of the kings of the earth. To him who loves us, and has washed us from our sins in his blood,