One more comment on this subject. My wife and I facilitate DivorceCare and GriefShare support groups. From all the pain, the loneliness, and the disrupted lives comes hope that originates from one place - Jesus Christ. Full recovery from the junk of life that affects every single human being is contingent upon acceptance of him and leaving sin in the rear view mirror.
Death came into this world from all mankind's choice of rebellion over obedience. We simply did not love the Lord and his ways enough to obey. The Lord created us, gave instructions on how we should live, died for us to redeem us from sin, and rose again to life to conquer death once and for all for those who accept the free gift. But it is not for those who do not accept him as Lord and Savior, that rebel from him and go a different way. It's not much of a reach to understand that obedience is a by-product as well as characteristic of somebody that has accepted Christ as their personal savior. In so doing we acknowledge that personal rebellion leads to sin, which is not acceptable to God. Since I am a sold out believer, I find it easy to understand what is sinful since Jesus set the standard, but Moses, Abraham, David, the prophets, the Apostles, the disciples, etc. before me helped define it all. It's all right there for me to read as well as to observe in others.
Yes, participating in homosexuality is a sin. Supporting homosexuality as a practice is sin. The Bible clearly states it is an abomination. If you do not accept Moses, Paul, etc. - how and why do you claim to accept Jesus? They are each God's children as believers. Jesus is of God as part of the Holy Trinity. God used Moses, Jesus used Paul. They were chosen - they did not choose. Jesus states all who believe and accept are his brothers and sisters, and those coming after him would do even greater works than him. We are members of his family when we accept. He said he came not to abolish one letter of the law of the prophets, but to fulfill the law. So if we look to Jesus' words; and it is asserted he supposedly said nothing about homosexuality; well, he handpicked Paul to be a major force in delivering his message to the entire world. So what Paul says - goes.
That being said, the clincher for me and many of us is that God told Moses to write things down. Those things are fundamental principles of Jewish, Christian and Islamic believers everywhere. He stated and Moses wrote that marriage is between a man and a woman. He stated any sex outside of marriage is fornication or adultery, which is defined as sin. How hard is that to understand? To not believe it is confirmation that the person is not practicing the principles of the faith and may indeed be lost. Which is why people rebel against it.
I responded to your last post about the Methodist Church but somehow it got deleted.
