Repentance

True repentance consists in the heart being broken for sin and broken from sin. Some often repent, yet never reform; they resemble a man travelling in a dangerous path, who frequently starts and stops, but never turns back. ---- Bonnell Thornton

To do so no more is truest repentance. --- Martin Luther

By it [repentance], a sinner...so grieves for, and hates his sins, as to turn from them all unto God, purposing and endeavoring to walk with Him in all the ways of His commandments. ---- Westminster Confession of Faith, chapter XV

Therefore I will judge you, O house of Israel, every one according to his ways, says the LORD God. Repent, and turn yourselves from all your transgressions... (Ezekiel 18:30-31). 

"Yet even now," declares the LORD, "return to me with all your heart, with fasting, with weeping, and with mourning; and rend your hearts and not your garments." Return to the LORD , your God, for He is gracious and merciful, slow to anger, and abounding in steadfast love; and He relents over disaster (Joel 2:12-13).  

For what earnestness this godly grief has produced in you, but also what eagerness to clear yourselves, what indignation, what fear, what longing, what zeal, what punishment! (II Corinthians 7:11).

A hymn to read, sing, hum, or whistle to the glory of God: God Be Merciful Unto Me