'Son' in the Bible

[the good news] regarding His Son, who, as to the flesh [His human nature], was born a descendant of David [to fulfill the covenant promises],

and [as to His divine nature] according to the Spirit of holiness was openly designated to be the Son of God with power [in a triumphant and miraculous way] by His resurrection from the dead: Jesus Christ our Lord.

For God, whom I serve with my spirit by preaching the gospel of His Son, is my witness as to how continuously I mention you

For if while we were enemies we were reconciled to God through the death of His Son, it is much more certain, having been reconciled, that we will be saved [from the consequences of sin] by His life [that is, we will be saved because Christ lives today].

For what the Law could not do [that is, overcome sin and remove its penalty, its power] being weakened by the flesh [man’s nature without the Holy Spirit], God did: He sent His own Son in the likeness of sinful man as an offering for sin. And He condemned sin in the flesh [subdued it and overcame it in the person of His own Son],

For those whom He foreknew [and loved and chose beforehand], He also predestined to be conformed to the image of His Son [and ultimately share in His complete sanctification], so that He would be the firstborn [the most beloved and honored] among many believers.

He who did not spare [even] His own Son, but gave Him up for us all, how will He not also, along with Him, graciously 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 what the promise said: “About this time [next year] I will come, and Sarah shall have a son.”

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