There can be no recovery of delight in the Great Commission without a renewal of the church’s conviction that it not only came into being but is sustained in every moment by the will and work of the Father, in the Son, by the Spirit. It is this confidence that motivates a missionary in Saudi Arabia to labor for years before witnessing a single conversion. So why do so many of us, as American Christians, measure success in our own churches by other standards, based on what we can accomplish and see on an impressive scale?
— Michael Horton, The Gospel Commission