On this occasion of Easter, we must think about the peace and new life that the Lord has given us by rising from the dead again.
The most important significance that this resurrection entails for us is the fact that the Lord perfectly completed all His works that completely blotted out all our sins, and that in consequence, He has brought our true salvation and true remission of sins to all of us. This is the most important significance and purpose of commemorating Easter.
Having risen from the dead, Jesus appeared before His disciples and said to them, “Peace be with you.” (John 20:19) Those who have received the remission of sins through the gospel of the water and the Spirit have peace in their hearts. What our Lord has given us by rising from the dead is this remission of sins.
Our Lord has given us new life by coming to this world, taking upon all our sins by being baptized by John the Baptist, bearing all the condemnation of sin by dying on the Cross, and rising from the dead again. This Truth is what has completed our salvation. The resurrection of Jesus means the final completion of our remission of sins and our salvation. (1 John 5:6-8)
The tranquility that is in our hearts is this very peace that comes from the remission of sins we have received.