"I decide to do good, but I don't really do it; I decide not to do bad, but then I do it anyway. My decisions, such as they are, don't result in actions. Something has gone wrong deep within me and gets the better of me every time. It happens so regularly that it's predictable. The moment I decide to do good, sin is there to trip me up. I truly delight in God's commands, but it's pretty obvious that not all of me joins in that delight. Parts of me covertly rebel, and just when I least expect it, they take charge.
"I've tried everything and nothing helps. I'm at the end of my rope. Is there no one who can do anything for me?... The answer, thank God, is that Jesus Christ can and does. He acted to set things right in this life of contradictions where I want to serve God with all my heart and mind, but am pulled by the influence of sin to do something totally different."
How do we overcome that dark nature within us? How do we keep ourselves from giving in to those urges to strike out, to hurt, to embrace revenge and retaliation when we're wounded and heart sick. We don't. But Jesus Christ can and does. His death on the cross brings us forgiveness, redemption. His resurrection restores us as God's very own. We're cleansed. Set free. Given a new way to live. And here's the best news of all: though we will always, always fail in our efforts to do what's right--that, too, is in our human nature--God's grace is there for us. We have but to ask, and that grace will cleanse us anew. Set us free. Make us blameless in His sight. Because He loves us. Unconditionally.
And that, my friends, is His nature.