One of the most ludicrous things that come out of Christian's mouths is the statement, "I want people to know what I'm for, not what I'm against."
Really? What are you for?
Rarely, if ever, do such people say. Rather, they spout this nonsense in a spirit of "tolerance," to show everyone how non-judgmental they are (while, essentially judging anyone else who might have come out against whatever the Facebook war is about).
You know what? It's petty. It's juvenile. It's shameful.
The Bible certainly doesn't make that claim. Last I checked, the Ten Commandments have a lot of Thou Shalt Nots! Pretty much saying what God is against, right? Reading through Leviticus there are a lot of descriptions of what God is against, namely the culture, practice and religion of the people of the world. The Bible teaches that God's people have been called out of those ways of living to be set apart to God and that they should follow his ways.
In the whole SCOTUS ruling on same-sex unions, God clearly states He's against that. In fact, He calls it an abomination (Leviticus 18:22).
God also states clearly what He's for: That all should come to repentance because he loves the world!
Christians are called to be the light of the world. Light is gentle and pervading, pushing back darkness. It may be harsh to the person who has been living in night for a long time. But we're not to hide our light. It's our testimony. It's what we're for.
But that same light shows, inherently what we're against. Darkness. We oppose it by our new natures in Christ.
Light is good. Plants and life itself cannot thrive without it.
God wants us to carry His light, both what it's for and against, into the world He loves for the benefit of people, not their harm.
God's light should offer hope to those who repent.
But, it will also reveal judgment to those who don't.
That's just the way it is. In the issue of people's lives and the choices they make, Christians should stand firmly on what God is against, which reveals what He's for. And the issue of what "I" am for or against is really moot.