A recent quote from a non-believing, pro-gay organization leader was, “We need to learn to ignore the B.S. in the Bible about gay people just like we’ve learned to ignore the B.S. in the Bible about slavery, shellfish, virginity, masturbation, etc.”
The reasons for the dietary regulations and such in the Levitical Law can be very blurry to most people; many simply do not understand why God commanded abstinence from things like shellfish, pork, etc. God was not being insensible or needlessly dictatorial when putting these restrictions into place, but He was orchestrating a bigger plan than the people of Israel would realize at that time. By external means, God was separating His chosen people from the rest of the civilizations of the world. He was making them different, peculiar, wholly separate; and when the inhabitants of the earth would look at Israel, they would see that God’s people were different than them. This is the whole point of the specific commands regarding food and drink, and now that Jesus has come we are no longer held to these external prohibitions in the law because no longer does God separate His people by means of the flesh (externally), but He does so by the means of spiritual regeneration; by changing the heart. The Levitical Law was only a shadow of the things to come, things which are now being fulfilled because the Christ of God has come into the world and suffered the death for sinners, tearing down the wall of separation between man and God, freeing us from the enslavement of our sin. All the sacrifices, dietary regulations, social restrictions, etc., of the Law were pointing to Jesus Christ…. and He has come, therefore nullifying the Old Covenant of the Law and establishing the New Covenant of Grace by the shedding of His own blood.
Now, as you’ll notice, the forbidding of homosexuality (along with all other sexual immorality) appears in the New Testament as well as the in the Old Testament Law. People often are confused by this because they’ve been told that Jesus eliminated the Old Testament so we don’t have to adhere to it anymore. What they don’t understand is that although Jesus has in fact freed us from the ritualistic aspect of the Law and from the condemnation of the Law, He has also freed us to pursue the holiness of God through Him. The moral part of the law is different than the ritual/sacrificial part of the Law because it is a reflection of who God is and who He desires us to be.The prophets foretold the day that God would write His law and statutes on His people’s hearts (spiritual regeneration), and today is that day. The Holy Spirit comes into those who believe on Christ and convict them of their sin and leads them to repent from dead works and conforms them to the image of Christ. When God put the moral standards into place (through the O.T. Law) regarding sex, murder, lying, etc.; He was reflecting to His people His own character. God’s character never changes, so the God who prohibited sexual immorality in the Old Testament also forbids it today. The difference between that old age and the new age we live in today is that Jesus Christ has come and absorbed the wrath of God for anyone who will believe in Him. The wages of sin is death (and surely we deserve it), but if we believe on Jesus, He has paid that penalty for us on the Cross. When someone truly trusts in Jesus, they no longer will desire to pursue the sin that killed their Savior, but will rather desire to pursue the holiness and purity that God desires. Of course we all fall and mess up, but the grace of God is there to sustain us. Like I said, those in Christ are free from the condemnation of the Law… meaning that if we mess up, we will not be condemned because Jesus has paid in full the debt for that sin; but because our heart is changed, we will repent and continue to pursue God and forsake the sin that He hates.