So, two - David and Jesus. Any more?
For ye are all sons of God, through faith, in Christ Jesus...when the fullness of the time came, God sent forth His Son, born of a woman, born under the Law, so that He might redeem those who were under the Law, that we might receive the adoption as sons. Because you are sons, God has sent forth the Spirit of His Son into our hearts, crying, "Abba! Father!"… For those who are led by the Spirit of God are the children of God...The Spirit himself testifies with our spirit that we are God's children...See what great love the Father has lavished on us, that we should be called children of God! And that is what we are! The reason the world does not know us is that it did not know him....Dear friends, now we are children of God, and what we will be has not yet been made known. But we know that when Christ appears, we shall be like him, for we shall see him as he is.
...those that received Him, to them He gave authority to become the sons of God, even to them that believe on his Name, who were born, not of blood nor of the will of the flesh nor of the will of man, but of God.