It's Good Friday to mankind because -
1. By the injustice which Jesus suffered, He bore the justice of God on our behalf that demanded that we suffer and die.

2. Jesus' shame and reproach on the cross brought us glory and eternal honour.

3. Jesus' cruel death on the cross brought us eternal life.

4. Jesus' 39 stripes were for our healing and health.

5. The blood that flowed from Jesus' pierced sides reconciled us back to God's side.

6. The eternal scars on Jesus' pierced hands will forever be an eternal sign of His sacrifice and love for us.

7. Jesus died as the Last Adam, thereby terminating the cursed and depraved Adamic race. Jesus' death brought an end to the tyranny of the Flesh (our old man) and laid the foundation for the birth of a new race after the image of Christ the New Man

Jesus was born so that He would die, and He died so that He would procure for us eternal redemption.