The acceptance of gays into churches has become a very heated issue that began shortly after gay rights become a public topic. The problem that conservative Christian churches have with the full acceptance of openly gay people into churches is that the scripture in Leviticus 20:13 gives a death penalty to any man that would sleep with another man in the same way that a man would sleep with a woman. If conservative Christian churches fully accepted openly gay people into full fellowship and communion, then they risk being in full disobedience to the command of scripture.
Many conservative Christians would be reminded of passages such as 1 Corinthians 5:1-5 that teach no tolerance to sexual immorality as scripture commands that a man that had slept with his father’s wife be handed over to Satan for the destruction of the flesh in order that the soul would be saved. What such passages teach is a clear duty to punish sexual immorality by giving the immoral people over to Satan to be destroyed. On the other hand if the sexually immoral do not publicly promote their sexual immorality, then they need not be punished with being handed over to Satan to be destroyed because people would not know about their problems.
The problem that the New Testament often faces is that many times sins would be promoted above the gospel message. 2 Corinthians 10:5-6 for example shows the apostle stating that every pretention and argument that sets itself against the knowledge of God would be demolished by the apostle’s own doing, and once the congregation’s obedience had been made complete every act of disobedience would be ready for punishment. One could thus see that sins that do not promote themselves publicly against the gospel message need not be punished because obedience of a congregation will likely not be complete anyway.
Of course people that are openly gay and are promoting of the gay lifestyle should be handed over to Satan if they come to church and promote their views because otherwise their views would contaminate the gospel message (people would think that the church endorses gay lifestyles). On the other hand if gay people come to church and are quite about their sins because they are wanting redemption and seeking freedom from their sins, then James 5:9 would apply that teaches that people are not to grumble against one another or that they would be judged because the judge is standing at the door. In the case of James 5:9 the context is Passover (the Lord’s Supper) when death would Passover those that had the blood of the lamb applied to their door post, and the message that one could drawn from the passage is that if people are wanting to be under God’s covenant, then they should not be prevented from being in it despite people’s grumblings against them.
I once was involved in discussion regarding a case that involved a homosexual man that had come to the church that I was attending. The man that served the Lord’s Supper that day wanted to know what I thought about the homosexual man receiving communion or not. I explained that since the man was not openly promoting his homosexual lifestyle that he may be attending church for the sake of redemption or repentance, and thus the church would be in error to not give him the Lord’s Supper. My solution to the dilemma was for the man presiding over the sacraments to simply list and name sins that lead to death and to explain that by repenting and receiving the Lord’s Supper that the hope that everyone would be showing is to be redeemed from those sins listed. Overall, such an approach can be best for a church to practice because it makes the individual decide if they are seeking to be redeemed of their sins or not, and if they are, then they will take the Lord’s Supper but if not, then their promotion of sin will cause them to pass.