“Spontaneous expansion begins with the effort of the individual Christian to assist his fellow, when common experience, common difficulties, common toil have first brought the two together. It is this equality and community of experience which makes the one share his message in ways the other person can understand. He makes the hearer approach the subject with sympathy and confidence because of their common experience. This makes approaching the subject of salvation easy and natural, with confidence, because the one is accustomed to understand what the other says and expects to understand him now.”
What carries conviction is the manifest impartiality of the speaker. He speaks from his heart. His subject has gripped him. He speaks of what he knows, and knows by experience. The truth which he imparts is his own truth. He knows its force in his own life. He is speaking almost as much to relieve his own mind as to convert his hearer, and yet he is as eager to convert his hearer as to relieve his own mind; for his mind can only be relieved by sharing his new truth, and his truth is not shared until another has received it. His hearer realizes this. Inevitably he is moved by it. Before he has experienced the truth himself he has shared the speaker's experience.”
This is the ultimate passion in proclaiming the gospel. Though we see little of this today, it is as close as asking God to give it for the sake of His glory.
Roland Allen, Edited by Sherman Driver