So you believe in a Bible that sanctifies slavery and in a God that permits rape, murder, genocide, among other horrors?
Why should anybody support a God that either has no power to stop wrongs or refuses to do so?
Slavery is allowed in the Bible BY THE ISRAELITES, who is God's Chosen. The slavery is not brutal the way Negroes were treated in America and people like to use this to justify their defiance of God's Laws, Statutues, and Commandments.
Rape and murder is not 'justified', and if you're going to claim that it is, produce a scripture. You don't know the Bible, so you go off what you hear instead of what you can prove yourself. It's not up to me to prove to you why you should 'support'
God, that's up to you to determine.