Romans 2:28-29

For the real Jew is not the man who is one outwardly, and the real circumcision is not outward in the flesh;

Colossians 2:11

In him also you were circumcised with a circumcision not made with hands; even in putting off your sensual nature in Christ's own circumcision,

James 4:6-7

But he gives more and more grace. therefore it is said, God ever resists the proud; but to the humble he gives grace continually.

Treasury of Scripture Knowledge

Summary

Circumcise therefore the foreskin of your heart, and be no more stiffnecked.

Stiff-necked

Bible References

Stiff-necked

James 4:6
But he gives more and more grace. therefore it is said, God ever resists the proud; but to the humble he gives grace continually.