David writes about the awesome wisdom of God's creation in Psalms 19, which then takes an interesting turn. He then starts talking about how the Word of the Lord is perfect, converting the soul and also "cleanse me from secret fault," "keep your servant back from presumptuous sin." Jesus' first sermon as recorded by Mark was simple. "The Kingdom of God is at hand; repent and believe the Gospel."

The Word of the Lord is perfect, converting the soul. Repent and believe the Gospel. Paul said it was the power of God unto salvation. Repent in Hebrew means to turn. In the Greek it means to change the way you think. When you change how you think about the weight and sin that so easily besets us and turn away from that to God, and believe the Gospel, your life is transformed.