Christ died to pay the penalty of our sins. Without the shedding of blood there is no remission. Christ suffered before His crucifixion, this suffering was for many things, look at the following scripture.

Isa 53:5  But He was wounded for our transgressions, He was bruised for our iniquities; The chastisement for our peace was upon Him, And by His stripes we are healed.

Christ was nailed to the cross at the 3rd hour, taken down again, appeared before Pilate for the second time, beaten again and then nailed back on the cross at the 6th hour.

Notice He was crucified, nailed to the cross, at the third hour.

Mar 15:25  Now it was the third hour, and they crucified Him.

At the sixth hour, He was before Pilate again and presented to the crowd.

Joh 19:14  Now it was the Preparation Day of the Passover, and about the sixth hour. And he said to the Jews, “Behold your King!”

Joh 19:16  Then he delivered Him to them to be crucified. Then they took Jesus and led Him away.

Here is the reason for Christ being crucified twice.

Heb 6:6  if they fall away, to renew them again to repentance, since they crucify again for themselves the Son of God, and put Him to an open shame.