And their faith came as a gift from God that empowered them to fulfill His purposes for their lives in the world.
It sustained them through great trouble, as we see in St. Peter's rescue and St. Paul's assurance that God would deliver Him through the final trials to Heaven and his reward.
Faith is worth all that we invest in it, because it is the power of God in the world.
As we can see, God built up a great Church on the foundation He laid in these two apostles, who proclaimed with their preaching and by their lives the Paschal Mystery.