Are we in danger of speaking or thinking of Christ irreverently? I do not think we are in any immediate danger of deliberate profaneness; but we are in great danger of this, viz. first, of allowing ourselves to appear profane, and secondly, of gradually becoming irreverent, while we are pretending to be so. Men do not begin by intending to dishonour God; but they are afraid of the ridicule of others: they are ashamed of appearing religious; and thus are led to pretend that they are worse than they really are. They say things which they do not mean; and, by a miserable weakness, allow actions and habits to be imputed to them which they dare not really indulge in. Hence, they affect a liberty of speech which only befits the companions of evil spirits. They take God's name in vain, to show that they can do what devils do, and they invoke the evil spirit, or speak familiarly of all that pertains to him, and deal about curses wantonly, as though they were not fire-brands,—as if acknowledging the Author of Evil to be their great master and lord. Yes! he is a master who allows himself to be served without trembling. It is his very art to lead men to be at ease with him, to think lightly of him, and to trifle with him. He will submit to their ridicule, take (as it were) their blows, and pretend to be their slave, that he may ensnare them. He has no dignity to maintain, and he waits his time when his malice shall be gratified. So it has ever been all over the earth. Among all nations it has been his aim to make men laugh at him; going to and fro upon the earth, and walking up and down in it, hearing and rejoicing in that light perpetual talk about him which is his worship.

Now, it is not to be supposed that all this careless language can be continued without its affecting a man's heart at last; and this is the second danger I spoke of. Through a false shame, we disown religion with our lips, and next our words affect our thoughts. Men at last become the cold, indifferent, profane characters they professed themselves to be. They think contemptuously of God's Ministers, Sacraments, and Worship; they slight His Word, rarely looking into it, and never studying it. They undervalue all religious profession, and judging of others by themselves, impute the conscientious conduct they witness to bad motives. Thus they are in heart infidels; though they may not formally be such, and may attempt to disguise their own unbelief under  pretence of objecting to one or other of the doctrines or ordinances of religion. And should a time of temptation come, when it would be safe to show themselves as they really are, they will (almost unawares) throw off their profession of Christianity, and join themselves to the scoffing world.

 PPS 1/23