Sin is the transgression of the Law. Sin is missing the mark.
Sin is any unrighteousness.
Isaiah 5 records 6 sins of Israel that stirred God to anger. A. Many think they are right, when they are plainly wrong. The Boy with the Braid, and his parents. The best way to teach the boy responsibility is to let HIM suffer the consequences of HIS choice, not to blame the coach. B Pride was Satan's sin.