Loved this quote from Stott’s commentary on Romans 15:16,
All evangelists are priests, because they offer their converts to God. Indeed, it is this truth more than any other which effectively unites the church’s two major roles of worship and witness. It is when we worship God, glorying in his holy name, that we are driven out to proclaim his name to the world. And when through, our witness people are brought to Christ, we then offer them to God. Further, they themselves join in his worship, until they too go out to witness. Thus worship leads to witness, and witness to worship. It is a perpetual cycle.
-John Stott, The Message of Romans