Entire sanctification, also called Christian perfection or the second blessing, is Wesley's doctrine and the Nazarenes exist because American Methodism let it slide. The claim is that after justification a believer may receive a further, definite work of the Holy Spirit which cleanses the heart from the inbred inclination to sin and fills it with perfect love toward God and neighbour. It is not sinlessness in the sense of never erring — Wesley and the Nazarene Articles both exclude ignorance, mistake and infirmity — and it does not end the need for growth. The doctrine has been under quiet internal pressure for fifty years: fewer Nazarene members report a distinct sanctification experience, and Nazarene theologians have increasingly framed it as a process with a crisis point rather than as an instantaneous transaction. The denomination's seminaries and its General Assembly keep returning to the question, which is a reasonable indicator of how central it is.