Some food for thought (yes from a pro-God website, and it's fine that it's biased as LesbianMummy used a "Gay Christian" one)
"I was born gay"
Homosexual desires are examples of the sin nature that all people are born with (Romans 3:23). While gay temptations may be very strong, they are not exempt from God?s law. God gives us the responsibility to resist our sinful desires, and not allow them to rule over us (Genesis 4:6-7, Romans 6:11-14). He gives us power and healing through the Holy Spirit so we can live as truly changed people, and not just pretend to be so (Romans 8:11-13, 2 Corinthians 5:17). Claiming people are born gay is attempting to justify sin. Using that rationale, people such as liars, hypocrites, thieves, child molesters and cannibals could also claim they "were born that way."
Jesus didn?t say anything about homosexuality, so it proves that its ok
Jesus upheld God?s original plan for human sexuality (i.e. sex in heterosexual marriage only), as stated in Genesis 2:20-24. Jesus said, 6"But at the beginning of creation God 'made them male and female.' 7'For this reason a man will leave his father and mother and be united to his wife, 8and the two will become one flesh.' So they are no longer two, but one. 9Therefore what God has joined together, let man not separate" (Mark 10:6-9 NIV). Common sense would suggest that had Jesus regarded homosexual activity as acceptable, he would have mentioned it at that point, since it would have been a radical departure from the traditional teaching.
From a legal perspective, Jesus addressed two important sections of God?s laws from the Old Testament: the ceremonial laws and the moral laws. Jesus satisfied the requirements of the ceremonial laws (the tabernacle system) through his death (Hebrews 9:8-14). The moral laws, however, remained in effect. Examples of the moral laws include the Ten Commandments and the sexual conduct laws. In the sermon on the mount (Matthew 5-7), Jesus taught extensively on our need to adhere to God?s moral laws in thought, word and deed.
"Jesus doesn't preach against it, so it must be ok"
Jesus taught that love for God is shown by keeping his commandments (John 14:21,23). This included keeping the standards of sexual purity established in the Old Testament. Since Jesus came to fulfill God?s law and not destroy it (Matthew 5:17-18), he could not have condoned homosexual acts that were specifically prohibited in the law. The New Testament authors confirmed that homosexuality continued to be sin in several scriptures (1 Corinthians 6:9-10, Romans 1:24-28, 1 Timothy 1:8-11).
Gay marriage will help gay couples finally gain the peace they?ve been searching for.
The Bible never describes marriage as a union of same-sex partners. It consistently describes marriage as a heterosexual union and provides all marriage and divorce instructions in heterosexual context (Leviticus 21:7,14, Ephesians 5:22-33, Proverbs 5:15-20, 1 Peter 3:7, 1 Corinthians 7:1-13, Titus 2:4-5, Matthew 5:31-32, Matthew 19:1-12, Mark 10:2-11, 1 Timothy 2:3,12). It seems reasonable to expect that if God had intended same-sex marriages to exist, he would have provided instructions concerning it.
Since we see homosexual acts consistently described as sin in the scriptures, we can be certain that pursuing gay marriage will place a person at odds against God. He or she will never find the peace that they are yearning for because they have embraced a carnal, sinful mindset (Romans 8:5-9). Instead of having peace, they will find themselves always searching for fulfillment and affirmation. The scriptures confirm this, as Isaiah wrote: But the wicked are like the tossing sea, which cannot rest, whose waves cast up mire and mud. "There is no peace," says my God, "for the wicked." Isaiah 57:20-21 NIV They will constantly try to convince themselves and others that their unnatural relationship (homosexual) is natural.
I can have peace with God without giving up gay sex acts.
When we accept Jesus as our Lord and Savior, we are forgiven of our sins. At that point, God calls us to change our lifestyles to follow Him the best we can. He doesn't leave us to do this tough task on our own, though. He gives us His Holy Spirit to empower us to make the changes (Romans 8:11,13). The Bible provides the scriptures that show us the new lifestyle we are to follow. Every lifestyle that embraces sin must be surrendered to God, and this includes homosexuality.
If we continue to live in sin and "practice" it after receiving Jesus, we are rejecting the sacrifice he made for us on the cross. When we reject Christ's sacrifice, there is no other sacrifice available to cover our sin, and we are in danger of eternal destruction (Hebrews 10:26-29). I'm sharing this not to scare or condemn, but to plead with people to abandon sin and follow God. Some people may feel that if they give up homosexuality they will die. Quite the opposite is true, because when we give something up for God, we clear the pathway for His love and life to flood our souls.
Homosexuality was forbidden under Old Testament Law, just as was eating shellfish and pork. Since Jesus did away with the Law, homosexuality is now OK with God.
There were three types of laws in the Mosaic system: ceremonial, civil and moral.
The ceremonial laws established procedures for the tabernacle system such as cleansing of the body from physical and spiritual impurity. The requirements of these laws were fulfilled in the completed work of Jesus Christ, who provided the perfect sacrifice once for all time (Hebrews 9:8-14).
The civil laws provided the standards for justice and governmental structure for the nation of Israel. These have been adapted to various cultures over time.
The moral laws defined sin based on God?s character and truth. These laws are timeless and do not change (Matthew 5:18, 1 Peter 1:25, Isaiah 40:8).
The laws concerning clean/unclean foods were ceremonial laws. Through his death on the cross, Jesus entered the perfect, heavenly tabernacle and satisfied the requirements of the Old Covenant?s ceremonial laws (Hebrews 9:8-14, Romans 8:3-4). Paul confirmed that the ceremonial laws concerning food were no longer in effect due to Christ?s finished work (Romans 14:14-17,20-21; Colossians 2:20-23; 1 Timothy 4:1-5).
The sacrifice system under the Old Covenant merely cleansed the body from sin, but not the conscience (Hebrews 9:11-14). Jesus showed the need for the conscience to be cleansed when he explained that it wasn?t food that defiled a person, but rather, evil thoughts, words and actions (Matthew 15:19). These can all be linked to transgressing moral laws. Jesus gave several examples of such transgressions in his sermon on the mount in Matthew 5,6,7.
Jesus established a new covenant that provided cleansing of the body and conscience from sin (Hebrews 9:8-14, Colossians 2:13-14). This was significant in view of the moral laws that continued to be in effect. Through faith in Christ, people are forgiven of their transgressions of the moral laws (i.e. sin) and also receive power through the Holy Spirit to abide by those laws (Romans 8:9-13). Note that God?s forgiveness does not remove our obligation to live by the moral laws. Jesus confirmed their continuing validity when he said:
17"Do not think that I have come to abolish the Law or the Prophets; I have not come to abolish them but to fulfill them. 18I tell you the truth, until heaven and earth disappear, not the smallest letter, not the least stroke of a pen, will by any means disappear from the Law until everything is accomplished. 19Anyone who breaks one of the least of these commandments and teaches others to do the same will be called least in the kingdom of heaven, but whoever practices and teaches these commands will be called great in the kingdom of heaven.? Matthew 5:17-19 NIV
Additionally he said: ?Whoever has my commands and obeys them, he is the one who loves me. He who loves me will be loved by my Father, and I too will love him and show myself to him." (John 14:21 NIV)
The laws concerning homosexual activity (Leviticus 18:22, Leviticus 20:13) are moral laws. Paul, who as a Pharisee was an expert in the law, confirmed that homosexual acts and thoughts continued to be sin under the New Covenant (1 Corinthians 6:9-10, Romans 1:24-28, 1 Timothy 1:8-11). In 1 Corinthians 6:9, Paul deliberately used the very words from Leviticus 18 (mishkav zakur in the Hebrew, translated as arsenokoitai in the Greek) when stating that those who practice homosexuality will not inherit the kingdom of God. He could not have been more clear.