Matthew 3:9

and quit thinking to yourselves, we claim Abraham as our forefather, because I tell you, God is able to make Abraham's children out of these stones.

Galatians 4:26-28

But the heavenly Jerusalem [Heb. 12:22] consists of free people, and is the mother of us [Christians].

Treasury of Scripture Knowledge

Summary

The children which thou shalt have, after thou hast lost the other, shall say again in thine ears, The place is too strait for me: give place to me that I may dwell.

Bible References

Children

Matthew 3:9
and quit thinking to yourselves, we claim Abraham as our forefather, because I tell you, God is able to make Abraham's children out of these stones.
Galatians 4:26
But the heavenly Jerusalem [Heb. 12:22] consists of free people, and is the mother of us [Christians].