I came back to a spiritual belief--still not very church-going--after 20 years of darkness with a "new age" study group based on A Course in Miracles. It's a Christ-based spiritual study that does not replace anyone's religion. For me, it provides a rock-solid faith that a loving God is in firm control, that Christ is my savior and brother, and that he sent the Holy Spirit as my inner counselor, comforter, and guide.
From there, I'm in deep agreement with my Catholic family, my Baptist in-laws, and my many new-age friends. If we could only identify our broad, broad areas of agreement here at home and around the World, then killing in the name of God would be exposed for what it is--ego, power-lust, and ignorance.