How do we know that God's power can change our hearts?

The power of God to change our hearts is a central theme in the sermon, illustrated through God's sovereignty and the work of the Holy Spirit. The psalmist's prayer acknowledges that only God can make such profound changes in our nature. This is underscored by the example of the woman with the issue of blood, who, despite years of ill health, found healing through Christ's power. It is through the gospel of Christ—His life, death, and resurrection—that God has the authority to change the hearts of sinners, reconciling them to Himself. This divine transformation is essential for anyone to be inclined toward God's testimonies, away from sin. It is not through human effort but through God's sovereign initiative that hearts are transformed.