Our journeys find their origin in God's call. God's will is the goal for each of our journeys. Our journeys are linked, and thus we need one another. Grace greases our journeys so that they might succeed. Our journeys prepare the way for Christ's return.
Faithfulness is the key virtue for journeying.
Paul's point here is an interesting one. Since there is nothing wrong with the call the Corinthians received, then the problems they are experiencing are due to their misunderstanding of how to faithfully live out phase 3. Cooperation is the key virtue of phase 3, for without it we can make no real progress toward journey goals. Accordingly, this is where Paul begins as he examines the Corinthians phase 3 dilemma. Christianity is not a matter of personal opinion or human philosophy, but is revealed truth passed on to the churches through, in Paul's day, the apostolic witness of Paul and others.