Repentance is a thorough change of person’s natural heart, upon the subject of sin. We are all born in sin. We naturally love sin. We take to sin, as soon as we can act and think—just as the bird takes to flying, and the fish takes to swimming. There never was a child that required schooling or education in order to learn deceitfulness, selfishness, passion, self-will, gluttony, pride and foolishness. These things are not picked up from bad companions, or gradually learned by a long course of tedious instruction. They spring up of themselves, even when boys and girls are brought up alone.
The seeds of them are evidently the natural product of the heart. The aptitude of all children to these evil things is an unanswerable proof of the corruption and fall of man. Now when this heart of ours is changed by the Holy Spirit, when this natural love of sin is cast out, then takes place that change which the Word of God calls “repentance.” The person in whom the change is created is said to “repent.” They may be called, in one word, a repentant person.