At times in the Christian life, we have to believe before we can see. Other times, it is important to see first. It seems to me, that in the area of missions mobilization, seeing is an important ingredient as well. The Bible states in Matthew 9:36 that "When he (Jesus) saw the crowds, he had compassion them..." Several other places in scripture it states that seeing can lead to compassion.
The Parable of the Good Samaritan is a good example. Luke 10:33 reads "but a Samaritan, as he traveled, came where the man was; and when he saw him, he took pity on him." Do you see as Jesus sees? The parable then ends with Jesus' command, "Go and do likewise!" This actually does not mean go and do the same thing. ie: look for a foreigner beat up along side the road and help him. I suggest rather that "go and do likewise" implies we need to see as Jesus sees and do something about that which is before our very eyes!