http://tahoesafealliance.org/for-lgbqtia/what-does-lgbtqia-mean/
The + is anyone who supports any of the aforementioned causes.
Notice that the first letters all describe sexual sin and perversion?
God has an answer to them:
Leviticus 18:21-22, Leviticus 20:13, Romans 1:27, Romans 1:26, 1 Corinthians 6:9-10, 1 Timothy 1:8-10.