Want to talk about the fact that King David and Jonathan hand a formally recognized same sex union in the eyes of the state of Israel?
Yes, please give chapter and verse where it says that David and Jonathan had any relationship besides a close friendship (more like Jonathan idolized David).
They spoke of supporting each other's children (that would mean legitimate marriage, and all that goes with it).
By what authority do you declare homosexuality NOT sinful? The Lord did say that a man sleeping with another man as a woman was wrong. In Leviticus, it says that the man that does that "forfeits" his life (I do not know what that means, but it is the only place, the only sin that I remember having this stigma). In the NT, Yeshua spoke against lewd and perverse behavior. When Yeshua stopped the men from stoning the adulterous woman, what did he tell her? I will give you a hint: STOP THAT (sinful behavior). The Holy Spirit can give us the "grace" to overcome our sinful behavior, and only through the Lord can we go beyond our physical world and walk towards His light.
Today, those that want to practice Christanity, condemn homosexual behavior (notice they do not condemn the homosexual). Every person has sinful behaviors. Christians acknowledge those sins, and work to become better people. It is only homosexual activists that not only want this sin to be "tolerated", but they want this sinful behavior elevated to acceptable and even "preferred" behavior.
For someone that reads the Bible, it should be noted there are numerous places where deceit is strongly condemned. There are also mentions of those that lead the children astray from the Lord; it does not please the Lord. There are also places that mention "twisting" or changing the Bible for our own purposes; it does not please the Lord. Homosexual activists that claim to "love" the Lord should consider how their "love" will be regarded. Yeshua narrowed the Commandments to two. Our job as Christians is even more simple: give thanks and praise to the Lord (notice there is no telling the Lord that He is wrong).
I wish you peace. I hope you can find that passage about David and Jonathan, so you can gain a better understanding of the Lord.