Sin affects men in various ways, but it attacks them in every facet of life. It hinders their walk with God and hurts their ability to reach others for Christ.
Sin is not something man does by accident. It is something man does or allows based upon an unwillingness to stop an act before it becomes sin.
Scripture provides examples of specific sins; however, no example DEFINES sin. John's first epistle defines it as the transgression of the law.
