Romans 2:28-29

For the real Jew is not the man who is one outwardly, and the real circumcision is not something physical and external.

Colossians 2:11

Through your relation to him you have received not a physical circumcision, but a circumcision effected by Christ, in stripping you of your material nature,

James 4:6-7

But he gives all the greater blessing. As the Scripture says, "God opposes haughty persons, but he blesses humble-minded ones."

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 all the greater blessing. As the Scripture says, "God opposes haughty persons, but he blesses humble-minded ones."