God's Promises in Times of Temptation and Sin

Sometimes it's easy to be overwhelmed with sin and guilt. We get a glimpse of how rotten we are even as believers and despair that God could ever forgive and restore. On the one hand, we can treat sin too lightly and demean the incalculable cost of Christ's death. But conversely, sin can loom so large that what Christ has done doesn't seem to be enough. Either way we get it wrong because we're looking at ourselves and not at Him. All the more reason to believe what God has said about Himself and what He has promised to His children.

Here are a few quotes from Williams Spurstowe regarding God's promises in times of sin and temptation

What, then, is true humiliation? What is godly sorrow that leads to repentance (2 Cor. 7:10)? True sorrow for sin drives a sinner utterly out of himself. It stirs up a vehement thirst for Christ and a settled resolution to cleave wholly to Him as Lord, Savior, King, and Priest. Can you attest to such sorrow? Then believe it to be true and cleave to Christ. Do not compare yourself with another. 

Be careful not to censure yourself too much, for the purpose of censure is not to lead you to despair but to work true repentance in your hearts... Do not conclude that you have lost all sanctifying grace. Grievous sins may put you into a spiritual coma, but they do not reduce you to a carcass.

Living by God's Promises, Joel R. Beeke & James A. La Belle, Reformation Heritage Books, 2010, pp. 111, 113.