At least according to Charlie Howard, the Texas House representative from Sugar Land:
"What we're doing, we are saying, here is a law we are going to follow. It happens to be God's law".
You may see it for thine own eyes by clicking here (link will carry you to TexansFORMarriage.org and their embedded Windows Media Player will begin).
Let me simply say that the separation of church and state is a good thing for both religion and government. And you can support the separation of church and state by voting AGAINST Prop. 2.