What is the great commission? It's a universal call to do the work of Jesus' gospel, living and speaking it out. Read in context, it's also an antidote to doubt. Did you know that right before the disciples are told to "go into all the world," many of them are doubting the resurrected Christ?! And yet, Jesus calls them into the message of the kingdom: to speaking, and teaching, and even leading.
The great commission provides powerful evidence that doubt can exist alongside faith, and that we can be mobilized to put that faith into action in spite of - or maybe even because of - our doubt. My latest sermon, in blog form, is up on Women in Theology.