God is a mirror reflection of who we want God to be. If we are benevolent, so is our God. If we are wrathful, vengeful and full of hate against people who do not see our God in the same way, so, alas is he. God comes in all shapes and forms in the Bible, Koran and other religions and belief systems. We interpret from our scriptures, cultures and lives what we want to see. This justifies our own beliefs, our behavior. We can quote these sources in violence or in peace in love. It's all there for everyone to misinterpret.
It is a personal choice, yet each of us also has a personal responsibility for our own actions and not look to our G*d to justify or blame for our behavior that works against humanity as a whole.