Andrew Wilson answers the question; “Why does God care what I do with my genitals?”
He began by affirming the implication of the question that God does indeed care; not just about sex but about every aspect of our lives.
In Genesis 2:24 God establishes his design and parameters for sex: one man and one woman who are married. Right the way through the Bible, including the New Testament, this is maintained with all other alternatives to this being termed with the Greek word “pornea” which we would translate as “sexual immorality”. This refers to any sex outside of marriage including homosexuality.
“But why?!” is that heart of the question. Andrew outlined two key reasons that God would give such a restrictive command to humanity.
Firstly, because we’re made in the image of God (Genesis 1:26-27). An “image” is not just someone who shows a family resemblance but someone tasked to faithfully represent someone else. Since God is a God of covenant love and faithfulness, He has placed sexual intimacy inside a context of covenant love (marriage) to display Himself and His character to the world. The marriage relationship is likened in Scripture to God’s unwavering love and commitment to His church (Ephesians 5:25).
The second reason is that God wants us to flourish. This may seem surprising because we value our freedom to choose so highly. But God values our freedom to become someone greater and better and who we were made to be even more highly.
Like a child growing up or a train on tracks, limitations and boundaries are there for our benefit. Though our temptation is to follow every whim or desire that we have, thinking it will make us most contented, God has a much bigger vision for our lives. He wants us to become like Him, and this is possible through us coming into a relationship with Jesus Christ.
Our society is in danger of being sexually fundamentalist, where every lifestyle choice is fine except if you suggest sex should be limited in any way. For some, sex has even become like a god; an ultimate end, the peak of experience.
Sex is good, but Jesus is better. Jesus is not shy in telling us that it will be costly to follow Him (Matthew 16:24-25) but He also promises us that anything we do give up will be worth it (Matthew 19:29).