"you will find peace in me....I have conquered the world." We are into the last few days before Pentecost. The Church is using these prophesies of Jesus to prepare us for the coming of the Holy Spirit, the birth of the Church. The Spirit shall bring peace even in the midst of trouble. How can this be?
The Spirit stabilizes the situation; he makes all things secure in Christ, thus Christ becomes the foundation and rock of the Church. Jesus redeems, the Spirit sanctifies; they are two sides of the same coin.
But to be secure we need a vital (life changing) encounter with Jesus. This the the work of the Spirit. He lets us know that peace is in Jesus and that Jesus has conquered the world. And as the 1st letter of John says, "The man who knows Jesus is Lord has overcome the world.