John also wishes good health upon his dear friend and brother in Christ, which shows us that the concerns of Christian charity stretch not just to the spiritual affairs of men, but also to the condition of their bodies.  It is true that we must always keep the spiritual and eternal part of man uppermost in our minds, for regardless of our health at any particular time in life, it is certain that these earthly tabernacles must ultimately waste away and perish.  Nevertheless, the Lord would have us to take proper measures to ensure the health of our bodies, which are temples of the Holy Ghost, and it is certain that we are better equipped to serve Him when our bodies are in a fit and flourishing state.  It may be that Gaius had suffered from sickness for some time, which led John to ardently wish that his bodily health would prosper even as did his soul.

I cannot omit here the use Charles Spurgeon made of this verse in preaching to men dead in trespasses and sins.  Preaching as usual to a congregation of thousands on a Sabbath morning, he wondered what a horrible sight would meet his eyes if of a sudden every person’s physical condition were to match his spiritual!  John could happily wish such a boon about faithful Gaius, for he had confidence in the state of that man’s soul.  But how many others are there who have insinuated themselves into the churches, who are yet dead in trespasses and sins!  Were Spurgeon’s strange transformation to take place, I cannot but wonder how many putrefying corpses would occupy the pews in American churches of a Sunday morning.  We ought to take care that it be not so with us.  This we should do by first taking heed to our spiritual health, and then we may wish and work with the means God makes available to make the health of our bodies match that of our souls.