I close C. S. Lewis’ comments with this one that speaks to the vital issue of human wickedness, or sin:
“Christ takes it for granted that men are bad. Until we really feel this assumption of His to be true, though we are part of the world He came to save, we are not part of the audience to whom His words are addressed. We lack the first condition for understanding what He is talking about. And when men attempt to be Christians without this preliminary consciousness of sin, the result is almost bound to be a certain resentment against God as to one who is always making impossible demands and always inexplicably angry.”
It is vital to our ultimate salvation that we understand humility before our Creator God and His boundless grace and love that has provided for our eternal communion with Him through Jesus Christ and the indwelling Holy Spirit who guides our sanctification, overcoming our human wickedness, learning to live in Christ.