We all sin in many ways. Even when we desire to do right, our motives can be mixed and self-serving. David understood the deceitfulness of his own heart and prayed, “Keep back Your servant also from presumptuous sins; let them not have dominion over me.”

What are presumptuous sins, and why was David so concerned about them? Could we be guilty when we knowingly choose to sin while reasoning, “I know it’s wrong, but God will forgive me”?

And there are other ways we can take God’s grace for granted. In Isaiah, God had mercifully delivered His people from disaster. But instead of recognizing His hand, humbling themselves, and repenting, they simply went on with their lives. God warned them that the next time might be very different.

What about us? When things unexpectedly work out, do we merely count ourselves lucky? Do we congratulate ourselves for handling things well? Or do we recognize God’s mercy and ask what He may be teaching us?

Today we’ll look at presumptuous sin, the danger of taking God’s grace for granted, the difference between worldly sorrow and genuine repentance, and why sometimes loving someone means being willing to confront—or be confronted about—sin.