There can be no dillydallying around with the commands of Christ. We are engaged in warfare, the issues of which are life and death, and every day that we are indifferent to our responsibilities is a day lost to the cause of Christ. If we have learned even the most elemental truth of discipleship, we must know that we are called to be servants of our Lord and to obey his Word. It is not our duty to reason why he speaks as he does, but only to carry out his orders. Unless there is this dedication to all that we know he wants us to do now, however immature our understanding may be, it is doubtful if we will ever progress further in his life and mission. There is no place in the Kingdom for a slacker, for such an attitude not only precludes any growth in grace and knowledge but also destroys any usefulness on the world battlefield of evangelism.
Robert E. Coleman, The Master Plan of Evangelism (Grand Rapids: Baker Publishing Group, 2010), 58-59.