'Son' in the Bible

which God had already promised through His Prophets in Holy Writ, concerning His Son,

Concerning his Son Jesus Christ our Lord, which was made of the seed of David according to the flesh;

And declared to be the Son of God with power, according to the spirit of holiness, by the resurrection from the dead:

For God is my witness, whom I serve with my spirit in the gospel of his Son, that without ceasing I make mention of you always in my prayers;

For if, when we were enemies, we were reconciled to God by the death of his Son, much more, being reconciled, we shall be saved by his life.

For what the law could not do, in that it was weak through the flesh, God sending his own Son in the likeness of sinful flesh, and for sin, condemned sin in the flesh:

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.

He that spared not his own Son, but delivered him up for us all, how shall he not with him also freely give us all things?

and they are not all the children of Abraham because they are his descendants [by blood], but [the promise was]: “Your descendants will be named through Isaac” [though Abraham had other sons].

For this is the word of promise, At this time will I come, and Sara shall have a son.

it was said to her, “The older (Esau) will serve the younger (Jacob).”