The sure test of the quality of any supposed change of heart will be found in its permanent effects. Whatever, therefore, may have been our inward experience, whatever joy or sorrow we may have felt, unless we bring forth fruits meet for repentance, our experience will profit us nothing. Repentance is incomplete unless it leads to confession and restitution in cases of injury; unless it causes us to forsake not merely outward sins, which others notice, but those which lie concealed in the heart; unless it makes us choose the service of God and live not for ourselves but for Him. There is no duty, which is either more obvious in itself, or more frequently asserted in the Word of God, than that of repentance.