People warned Spurgeon that he would break down physically and emotionally under the stress of such expansive preaching. Spurgeon replied: “If I have done so, I am glad of it. I would do the same again. If I had fifty constitutions I would rejoice to break them down in the service of the Lord Jesus Christ.” He added: “We find ourselves able to preach ten or twelve times a week, and we find we are the stronger for it…. ‘Oh,’ said one of the members, ‘our minister will kill himself.’ … That is the kind of work that will kill no man. It is preaching to sleepy congregations that kills good ministers.” Spurgeon found strength in preaching.
-Steven Lawson, The Gospel Focus of Charles Spurgeon