'Son' in the Bible

to reveal his Son in me, that I might preach him among the Gentiles; straightway I conferred not with flesh and blood:

I have been crucified with Christ; and it is no longer I that live, but Christ living in me: and that life which I now live in the flesh I live in faith, the faith which is in the Son of God, who loved me, and gave himself up for me.

but when the fulness of the time came, God sent forth his Son, born of a woman, born under the law,

And because ye are sons, God sent forth the Spirit of his Son into our hearts, crying, Abba, Father.

So that thou art no longer a bondservant, but a son; and if a son, then an heir through God.

Howbeit the'son by the handmaid is born after the flesh; but the'son by the freewoman is born through promise.

Howbeit what saith the scripture? Cast out the handmaid and her son: for the son of the handmaid shall not inherit with the son of the freewoman.