God never intended to shame homosexuals, instead he loves and wants to redeem them.

When Jesus preached he was actually very friendly towards sinners. He spent a lot of time eating and drinking with the dregs of society that everyone avoided such as prostitutes and tax collectors. When he preached on hell it was always towards the believing Jews who knew the bible well. Unfortunately many in the church have it the other way around by preaching hell to sinners while focusing on love and mercy inside the church. Paul followed this pattern by telling us not to judge those outside the church but those inside it (see 1 Cor 5:12).

The unfortunate side effect of this is that Christians have been bringing shame unto sinners. However this was never God's intention. Scripture says that Jesus bore all our shame on the cross and everyone who believes into Jesus will not be put into shame. Shame always comes from Satan and never from God. Think of the shame that sunk Judas to commit suicide after betraying Jesus. Scripture tells us there is a worldly grief that leads to death but there is also a Godly sorrow that brings repentance unto salvation. The Holy Spirit always gives us the grace to turn back to God, never bringing shame which only sinks us further.

Another example is the prodigal son. After he returned to the father, he was expecting to be shamed. Instead the father received him with open arms with no mention of the mistakes he made but even threw a huge party to celebrate his redemption. This is the heart of our Father God who is always willing to receive us with open arms when we turn from our sin and run back to him.

That said, after you do become a Christian, there is an expectation on believers to progress from being sinners to saints. Jesus' association with sinners confused the Pharisees, but he explained that he was a physician looking for patients to heal. However it's not normal for the sick to stay sick after seeing the doctor. That's why Paul always addressed his letters to saints and not sinners.

God does put on Christians the burden to turn from sins like homosexuality, simply because his nature can't handle what God considers to be sin-- even for things society deems kosher. Isaiah was one of the holiest men of Israel, yet when he encountered God's presence he was totally undone because his eyes and lips were touched by sin. How much more will this happen to people who have sin dwelling inside them from practicing it?

God loves us and is doing everything he can to be with us. His holiness requires that men repent (turn away) from their sin unto God whereby they can receive the life and blood of his Son Jesus into their hearts as a covering for their past iniquity. Because He can't help his own holiness, God needed Moses to intercede for him in Numbers, and that's why Jesus is our heavenly high priest interceding for us. His holiness is like the incredible hulk, it's a part of his nature that defines who he is. But in his mercy he provided the solution for the problem of our sin versus his holy nature through the sending of his son Jesus to die for us.

Isaiah 43:25 “I, I am he who blots out your transgressions for my own sake, and I will not remember your sins.