'Son' in the Bible

To give the revelation of his Son in me, so that I might give the news of him to the Gentiles; then I did not take the opinion of flesh and blood,

I have been put to death on the cross with Christ; still I am living; no longer I, but Christ is living in me; and that life which I now am living in the flesh I am living by faith, the faith of the Son of God, who in love for me, gave himself up for me.

But I say that as long as the son is a child, he is in no way different from a servant, though he is lord of all;

But when the time had come, God sent out his Son, made of a woman, made under the law,

And because you are sons, God has sent out the Spirit of his Son into our hearts, saying, Abba, Father.

So that you are no longer a servant, but a son; and if a son, then the heritage of God is yours.

Now the son by the servant-woman has his birth after the flesh; but the son by the free woman has his birth through the undertaking of God.

What then do the Writings say? Send away the servant-woman and her son; for the son of the servant-woman will not have a part in the heritage with the son of the free woman.