It is easier to serve God without a vision, easier to work for God without a call, because then you are not bothered by what God requires; common sense is your guide....You will be more leisure-hearted if you never realize the call of God. But if once you receive a commission from Jesus Christ, the memory of what God wants will always come like a goad; you will no longer be able to work for Him on the common-sense basis.
The Christian who is zealous to promote the cause of Christ can begin by living in the power of the Spirit and so reproducing the life of Christ in the sight of men. In deep humility and without ostentation he can let his light shine. The world may pretend not to see, but it will see, nevertheless, and more than likely it will get into serious trouble with its conscience over what it sees.
A. W. Tozer