The son had a lengthy speech prepared.
Grace interrupted it, and the restoration is shocking in its totality. The son was hoping to go to work and be recognized as an employee, not a treasured son.
But grace overwhelms. The transformation is complete -- from death to life. God doesn't simply want us to be a little bit better than we were before... God wants to move us from death, ensnared by sin, into life, fully claimed by the Gospel. That's what God intends for you. That's what grace wants for you. For you to be changed into something new. You are a child of the living God, claimed in the waters of baptism and marked as Christ's own forever.
Grace has interrupted. Thanks be to God.