“Bring your lust to the gospel. Not for relief, but for further conviction of your guilt. Look on Him whom you have pierced, and let it trouble you. Say to your soul, ‘What have I done? What love, what mercy, what blood, what grace have I despised and trampled on! Is this how I pay back the Father for His love? Is this how I thank the Son for His blood? Is this how I respond to the Holy Spirit for His grace? Have I defiled the heart that Christ died to wash, and the Holy Spirit has chosen to dwell in? How can I keep myself out of the dust? What can I say to the dear Lord Jesus? How shall I hold up my head with any boldness before Him? Do I count fellowship with Him of so little value that, for this vile lust’s sake, I have hard;y left Him any room in my heart? How shall I escape if I neglect so great a salvation?
‘What shall I say to the Lord? His love, mercy, grace, goodness, peace, joy, consolation – I have despised all of them! I have considered them as nothing, that I might habour lust in my heart. Have I seen God as my Father, that I might provoke Him to His face? Was my soul washed that there might be room for new defilements? Shall I seek to disappoint the purpose of the death of Christ? Shall I grieve the Holy Spirit, Who has sealed me unto the day of redemption?’ Allow your conscience to consider these things every day. See if you conscience can resist the way in which these considerations aggravate guilt. If this does not cause your conscience to sink and melt, I fear that your case is very dangerous.”
– John Owen, The Mortification of Sin, p.78-79