I came across the following in a sermon from Charles Spurgeon on 1 Corinthians 6:19-20 and thought it was good counsel, especially in light of some over-the-topness in evangelical and reformed circles on issues of sex in recent years:
You will notice that in this chapter the apostle Paul has been dealing with sins of the flesh, with fornication and adultery. Now, it is at all times exceedingly difficult for the preacher either to speak or to write upon this subject; it demands the strictest care to keep the language guarded, so that while we are denouncing a detestable evil we do not ourselves promote it by a single expression that should be otherwise than chaste and pure. Observe how well the apostle Paul succeeds, for though he does not mask the sin, but tears the veil from it, and lets us know well what it is that he is aiming at, yet there is no sentence which we could wish to alter. Herein he is a model for all ministers, both in fidelity and prudence.