The perseverance of the believers in grace is wrought by the Holy Ghost, not irrespective of, but through, the free will of the man himself. Therefore it is a duty as a well as a grace. The grace of it should be preached for the encouragement of the diligent. The duty, and absolute necessity of it to salvation, should be preached to quicken the slothful and to increase the sense of obligation felt by all.

A. A. Hodge, The Confession of Faith, 237.