In John 14, Jesus promised his disciples the gift of the Holy Spirit. THis gift, poured out on Pentecost, enabled the early apostles (and still us!) to do the same works, and greater, that Jesus was doing. The goal is the same - to reveal the Father, through the Son, with the Holy Spirit, in the Church. We have been co-missioned, and our success is all wrapped up in the success of the Kingdom of God.