Sin - Piper

Sin considers God and his glory, and instead of loving God's glory and treasuring God's glory, sin exchanges God's glory for something else. That is what sin is.

Sin has to do with God, mainly. It is not mainly hurting people, though it does hurt people. Mainly, it is dishonoring God. It is belittling his glory - by not trusting him and not treasuring him and not wanting him as the foundation and center of our lives. All have sinned and are exchanging and, therefore, lacking the glory of God and, therefore, dishonoring the glory of God.

- John Piper, Sin,