Whenever I feel that I have sinned, and desire to overcome that sin for the future, the devil at the same time comes to me and whispers, “How can you be a pardoned person and accepted with God while you sin in this way?” If I listen to this I drop into despondency, and if I continued in that state I should fall into despair, and should commit sin more frequently than before; but God’s grace comes in and says to my soul, “Thou hast sinned; but did not Jesus come to save sinners? Thou art not saved because thou art righteous; for Christ died for the ungodly.” And my faith says, “Though I have sinned, I have an advocate with the Father, Jesus Christ the righteous, and though I am guilty, yet by grace I am saved and I am a child of God still.” And what then? Why, then the tears begin to flow, and I say, “How could I ever sin against my God who is so good to me? Now I will overcome that sin,” and I get strong to fight with sin through the conviction that I am God’s child.

-Charles Spurgeon