The coming of the Holy Spirit at Pentecost is a truly historic moment. It not only marks the official shift out of the law of Moses and into the "law of Christ" (cf. Gal. 6:2) for God's people, but it also marks the beginning of the church's mission to the world. Ryan explains in what ways the Spirit equips and empowers the church for this mission in the first of two Pentecost messages entitled, "The People of God Unleashed."