Good Friday is the Friday before Easter, and the day the Christian Church commemorates the crucifixion and death of Jesus Christ.
It is on this day that Jesus, fully God and fully man, bore the sins of the world, suffering Hell in our place as He hung on the cross. The death of Jesus paid the debt all people owe to God for their sins, redeeming us from sin, death and power of Satan. In Him we have redemption through His blood, the forgiveness of sins, according to the riches of His grace. (Ephesians 1:7)
Christians observe Good Friday in solemn reverence, recognizing our own sinfulness and contemplating our utter hopelessness without the forgiveness and salvation earned for us by Jesus on the cross. As we contemplate our need for a Savior, we also look ahead to Easter, when our Savior, Jesus, rose from the dead.