Sexual sins include homosexual behavior and a host of other sexual expressions that aren’t within the framework of what God had in mind when he designed us and destined fulfillment and joy for our lives. All sin is a result of the fall and finds its inspiration in a partnership with Satan (who desires to destroy us and bring us into bondage to demonic influence).
Leviticus 18:22-25 (NASB) – “You shall not lie with a male as one lies with a female; it is an abomination. Also you shall not have intercourse with any animal to be defiled with it, nor shall any woman stand before an animal to mate with it; it is a perversion. Do not defile yourselves by any of these things; for by all these the nations which I am casting out before you have become defiled. For the land has become defiled, therefore I have brought its punishment upon it, so the land has spewed out its inhabitants.”
There were many instructions that were included on sexual sin and sexual immorality instruction – from God – found in the Torah – the first five books of the Bible. This passage I’ve included out of Leviticus is just a sampling of what displeased the Lord, and describes the purity that He has called us to. These passages describe what sexual immorality is, from God’s definition.
Now fast forward to the days of grace and salvation by faith, through grace…
When the early Church experienced the outpouring of the Holy Spirit upon Gentile believers the disciples (or Apostles) felt no need to require the new Gentile believers to convert to Judaism and therefore follow all of the many ordinances of the Law (including circumcision). But they did confirm that abstinence from sexual immorality would be a clear transformational requirement to following Jesus. Obviously later on in scriptures other works of the flesh (or sins) were listed to avoid and come out of, but this is a key passage.
Acts 15:19-21 – “It is my judgment, therefore, that we should not make it difficult for the Gentiles who are turning to God. Instead we should write to them, telling them to abstain from food polluted by idols, from sexual immorality, from the meat of strangled animals and from blood. For the law of Moses has been preached in every city from the earliest times and is read in the synagogues on every Sabbath.”
There is no place or argument in scripture that allows a place in the Kingdom of Heaven for those who practice sexually immoral behavior. All of us must repent of practicing sexually immoral activity.