1. It consists in taking back that consecration to God and His service, that constitutes true conversion.
2. It is the leaving, by a Christian, of his first love.
3. It consists in the Christian withdrawing himself from that state of entire and universal devotion to God, which constitutes true religion, and coming again under the control of a self-pleasing spirit.
4. The text implies that there may be a backslidden heart, when the forms of religion and obedience to God are maintained. As we know from consciousness that men perform the same, or similar, acts from widely different, and often from opposite, motives, we are certain that men may keep up all the outward forms and appearances of religion, when in fact, they are backslidden in heart. No doubt the most intense selfishness often takes on a religious type, and there are many considerations that might lead a backslider in heart to keep up the forms, while he had lost the power of godliness in his soul.