Speaking for God and intimating that God hates homosexuals, would endorse discrimination, or raze your city for supporting equal benefits for all? Perhaps you railed against divorcees in God's name in the past century? Perhaps the mixing of black and white people was obviously against God's holy Word? Or the notion that Hurricane Katrina was God's punishment for a sinful city? This is called using the Lord's name in vain. This is the sin. These notions are from your pride in your knowledge of God's own thoughts. This is the sin.
Do the right thing. Love your neighbor as you love thyself. Stop hijacking my religion just so you can discriminate against someone else.