“Marriage & Sexuality, part 1: The Biblical Sexual Ethic”

Wednesday, August 09, 2023

There are some ideas within the framework of Biblical Christianity that long-time believers assume everyone among us just knows. And yet, if we aren’t deliberate about teaching the whole counsel of God (cf. Ac. 20:27), we may find that some among us simply don’t know certain Bible doctrines that we had assumed to be common knowledge. Additionally, when commonly-accepted doctrines are questioned or rejected by the world, some Christians can become convinced to go the world’s way unless we periodically make plain statements of Biblical truth.

So, in the interest making sure that the the whole counsel of God is spoken with conviction among us, consider these straightforward reminders of some basic morality of Christians’ sexual behavior.

The Bible is clear that sexual activity is right in only one relationship: a righteous marriage between a biological man and a biological woman. This is implicit in the creation story (cf. Gn. 2:24-25), and it is made explicit in the Ten Commandments (cf. Ex. 20:14) as well as many of the laws that God gave to the Hebrews after they left Egypt (cf. Lv. 18 & 20:10-21). With only a very few exceptions, these rules are restated by the Apostles in the New Testament (and good arguments can be made in favor of the unmentioned ones), with the apostles often just assuming the righteous ways in which Christians would behave in these ways (cf. 1 Cr. 5:1, Rm. 7:1-4, 1 Cr. 7:15, and other examples).

The bottom line is this: According to the Bible, sexual activity outside of a righteous marriage between a man and a woman is sinful. That means that a dating couple sleeping together before marriage is sinful. It means that homosexual activity by either gender is sinful. It means that sex with someone other than a person’s spouse is sinful. And the Lord himself added to all of that a prohibition against lustful thoughts about a person of the opposite sex, noting that such sexualized thoughts are also sinful (Mt. 5:27-28).

Does all of this really matter? Yes. A great deal. And we’ll talk in another writing about the many deep reasons why that is, but it’s one area where Christians ought to be exceedingly clear and convicted about who we are and how we are to faithfully serve God our king.

- Dan Lankford, minister

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