The Need for Power from On High - A.W.Tozer

Christ told His disciples to tarry in Jerusalem until they had been endued with power from on high. This can only mean that He will not entrust His work to the unready and the unqualified. It is infinitely more important that we should be prepared for service than that we should win someone else to our subnormal spiritual condition. Soul-winning by persons who have not met the test of obedience to the Word of Christ must inevitably produce other professing Christians of the same spiritual stripe. Missions carried on by persons not spiritually endued can but transplant an effete Christianity on a foreign shore, for be sure that no church founded in a heathen land will be any better than the spiritual lives of those who founded it.
Real repentance will result in purified hearts and sanctified lives. A hard and determined return to the pattern shown us in the mount will bring the smile of God upon our efforts. Then we shall experience not less soul-winning, but more. Then we shall have not fewer missionary activities, but more. Then whatever we do shall prosper (Psalm 1:3), and God shall be glorified in everything at home and abroad.

A.W.Tozer