How does God provide grace to sinners?

God's provision of grace to sinners is showcased in the redemptive work of Jesus Christ, who is described as fulfilling the law and suffering for the sins of humanity. In the sermon, it is expressed that Jesus, through His sacrifice on the cross, not only pays for the sins of His people but also imparts His righteousness to them. This means that when believers come to Christ in faith, they receive grace both for their past sins and for ongoing struggles. The endless supply of grace depicted as a river in Psalm 46 illustrates that God's grace is continually flowing, providing support, strength, and forgiveness in the daily lives of believers, enabling them to live in accordance with His will.