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Scientifically speaking, a rainbow is light being reflected and refracted off water droplets. This is some of the most beautiful imagery in the Bible since it comes after the destruction of the earth by water. Yet the rainbow itself can be revealed only through water. The rainbow also reveals the reality of light itself. Light is not white; it’s composed of colors. And just like light, God is not simplistic but multifaceted. God reflects his very image off of humanity—and humanity is at its height when we allow for this reflection to occur. The process of the Spirit of God filling our hearts, and redeeming our actions as a result, is the very process of refraction. Like light being refracted through water, God’s transformative work in us reveals the reality of who we really are. As the old self is destroyed, like water destroyed the earth, something more beautiful emerges in all the colors of God. Paul
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John D. Barry (Cutting Ties with Darkness: 2 Corinthians)