'The harvest is great, the labourers are few; the loiterers and hinderers are many, the souls of men are precious, the misery of sinners is great, and the everlasting misery to which they are near is greater, the joys of heaven are inconceivable, the comfort of a faithful minister is not small, the joy of extensive success will be a full reward. To be fellow-workers with God and his Spirit is no little honour; to subserve the blood-shedding of Christ for men's salvation is not a light thing. To lead on the armies of Christ through the thickest of the enemy; to guide them safely through a dnagerous wilderness; to steer the vessels through such storms and rocks and sands and shelves, and bring it safe to the harbour of rest, requireth no small skill and diligence. The fields now seem even white to harvest; the preparations that have been made for us are very great; the season of working is more calm than most ages before us have ever seen. We have carelessly loitered too long already; the present time is posting away; while we are trifling, men are dying; oh how fast are they passing into another world! And is there nothing in all of this to awaken us to our duty, nothing to resolve us to speedy and unwearied diligence? Can we think than a man can be too careful and painful under all these motives and engagements?'
Richard Baxter, The Reformed Pastor, p.202.