What Makes A Child of God?

A descendent from Abraham, David or any other godly person does not make a man a child of God:

John 1:13: "Which were born, not of blood, nor of the will of the flesh, nor of the will of man, but of God."

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Who were born, not of blood.

Luke 3:8 "Therefore bear fruits worthy of repentance, and do not begin to say to yourselves, 'We have Abraham as our father.' For I say to you that God is able to raise up children to Abraham from these stones.

Matt. 3:9 "and do not think to say to yourselves, 'We have Abraham as our father.' For I say to you that God is able to raise up children to Abraham from these stones.

John 8:39 They answered and said to Him, "Abraham is our father." Jesus said to them, "If you were 

Abraham's children, you would do the works of Abraham.

John 8:40 "But now you seek to kill Me, a Man who has told you the truth which I heard from God. Abraham did not do this.

Gal 3:6  Just as Abraham "believed God, and it was accounted to him for righteousness." 

Gal 3:7  Therefore know that only those who are of faith are sons of Abraham.

Gal 3:29 And if you are Christ's, then you are Abraham's seed, and heirs according to the promise.

Nor of the will of the flesh. The efforts and exertions of our own human hearts and natures may reform, but cannot regenerate, the life.

Jhn 3:6  "That which is born of the flesh is flesh, and that which is born of the Spirit is spirit.

Nor of the will of man. We are not begotten of God by the acts and deeds of our fellow-men no matter how much they may aid us in leading right lives.

But of God.

1Jo 4:7  Beloved, let us love one another, for love is of God; and everyone who loves is born of God and knows God.

1Jo 5:1  Whoever believes that Jesus is the Christ is born of God, and everyone who loves Him who begot also loves him who is begotten of Him.