Sin: The fundamental unbelief, distrust and rejection of God and human displacement of God as the center of reality. The Bible presents sin as both fallen humanity's state of separation and alienation from God and as a person's purposeful disobedience to God's will as evidenced in concrete thought or act. As an inherent part of the human condition sin is universal, and it is both corporate and individual.1
1. Stanley J. Grenz, David Guretzki & Cherith Fee Nordling, Pocket Dictionary of Theological Terms (Downers Grove, IL: InterVarsity Press, 1999), p. 107.