It's easier to serve God without a vision, easier to work...

It's 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, veneered over with Christian sentiment. But once you receive a commission from Jesus Christ the memory of what God wants will always come like a goad, and you will no longer be able to work for Him on the common sense basis.