Matthew 3:8-9

So produce fruit that is consistent with repentance [demonstrating new behavior that proves a change of heart, and a conscious decision to turn away from sin]; and do not presume to say to yourselves [as a defense], ‘We have Abraham for our father [so our inheritance assures us of salvation]’; for I say to you that from these stones God is able to raise up children (descendants) for Abraham. [Luke 3:8]