Abraham.

John 8:33
"We are Abraham's descendants, " they answered. "We have never been slaves to anyone. How can You say we will be set free?"

If.

John 8:37
I know you are Abraham's descendants, but you are trying to kill Me because My word has no place within you.

Matthew 3:9
And do not presume to say to yourselves, 'We have Abraham as our father.' For I tell you that out of these stones God can raise up children for Abraham.

Matthew 5:45
that you may be sons of your Father in heaven. He causes His sun to rise on the evil and the good, and sends rain on the righteous and the unrighteous.

Romans 2:28, 29
A man is not a Jew because he is one outwardly, nor is circumcision only outward and physical. . . .

Romans 4:12, 16
And he is also the father of the circumcised who not only are circumcised, but who also walk in the footsteps of the faith that our father Abraham had before he was circumcised. . . .

Romans 9:7
Nor because they are Abraham's descendants are they all his children. On the contrary, "Through Isaac your offspring will be reckoned."

Galatians 3:7, 29
Understand, then, that those who have faith are the sons of Abraham. . . .

James 2:22-24
You see that his faith was working with his actions, and his faith was perfected by what he did. . . .