Yesterday, 01:22 AM
The only way we can answer the question, "Should X be criminalized," is by, first, answering, "What does God say about X?" The two questions go together, when we are discussing what sexual sins should receive civil sanctions. But, of course, it takes wisdom to understand how to apply those sanctions in our modern world, and that can be challenging at times, I admit. But, nonetheless, it still needs to be considered when we're assessing public policy and its relation to sexual taboos.
Another thing to keep in mind is that the page marked "New Testament" in our Bibles is not inspired by God. That fact is very important because when we are talking about continuities and discontinuities between the Old and New Covenants, we need to realize that the Old Testament laws still applied when the New Testament was being written. Thus, the authors' approach to how Old Testament laws would apply to them in their own day would not have been riddled with many of the assumptions that we face today in modern Christianity (with ideas such as the "Two-Kingdoms Approach," "Law vs. Gospel" dichotomies, Dispensationalism, and other concepts which inherently but inadvertently pit the Old Testament against the New Testament). Unfortunately, you, yourself, are guilty of those very approaches to the New Testament, which is why you fail at understanding how the Old Testament applies to us today.
Remember, "All Scripture is given by inspiration of God and is profitable for doctrine, for reproof, for correction, for instruction in righteousness..." (2 Timothy 3:16). If sexual acts were condemned with civil penalties in the Old Covenant, then those penalties apply civilly, in some way, in the New Covenant. Otherwise, you would have to say that God made a mistake when He decreed those sexual acts as punishable by civil law under the Old Covenant. But, once again, it takes wisdom to understand how they apply today because the world has changed since the times of the Old Covenant. But the moral indictment against certain sexual behaviors does not change because moral laws are eternal, by nature.