On earth “you will be sorrowful, but your sorrow will turn into joy.” We are saved by the cross of Christ—He has defeated death and we have received freely “from the spring of the water of life.” The Spirit is already granting us peace and joy through the forgiveness of our sins. The Spirit will continue working in us by His grace, glorifying the Son of Man in us by our love for one another in the same way He was glorified by God in the cross.
In calling Matthew the tax collector to follow Him, Jesus demonstrates that He has come “not to call the righteous, but sinners” (Matt. 9:9, 13). As a good physician, He comes not to confirm them in their sins, but to heal them with His grace, calling them to repentance, faith and newness of life (Matt. 9:12). He puts them to death by the preaching of His Law, in order to raise them with His Gospel, to live before Him in the righteousness of His resurrection (Hos. 6:1–2, 5). It is in this way that God “gives life to the dead,” that is, through faith in Jesus, “who was delivered up for our trespasses and raised for our justification” (Rom. 4:17, 24–25). Thus, sinners from all nations are called to share the same faith as Abraham, the father of all who trust in Jesus (Rom. 4:16–18). And as our Lord in mercy thus welcomes us poor sinners to recline at the table in His house, so does He “desire steadfast love and not sacrifice” (Matt. 9:10, 13; Hos. 6:6), that we should have mercy on our neighbors and forgive their sins against us for Jesus’ sake.