Jesus was physically exhausted and in danger of going into shock unless he received fluids (which he apparently did not). This is the man that the Roman soldiers tortured. Having previously been beaten by the Jews, it was now the Romans' turn.
In addition, Jesus was forced to carry the wooden beam on which he would die. Imagine the effect of carrying a heavy weight if you were in that condition.
Crucifixion was a common mode of punishment among heathen nations in early times. It is not certain whether it was used by the ancient Jews; probably it was not. The modes of capital punishment according to the Mosaic law were, by the sword (Exodus 21), strangling, fire (Lev. 20), and stoning (Deut. 21).
This was regarded as the most horrible form of death, and to a Jew it would acquire greater horror from the curse in Deut. 21:23.
This punishment began by subjecting the sufferer to scourging as discussed earlier. In the case of our Lord, however, his scourging was before the sentence was passed upon him, and was inflicted by Pilate for the purpose, probably, of producing pity to avoid a demand for further punishment .
Hung completely naked before the crowd, the pain and damage caused by crucifixion were designed to be so devilishly intense that one would continually long for death, but could linger for days with no relief.
Medical examiner, Dr. Frederick Zugibe, believes Christ died from shock due to loss of blood and fluid, plus traumatic shock from his injuries, plus cardiogenic shock causing Christ's heart to fail.
Our Lord uttered memorable words from the cross, including “Father, forgive them; for they know not what they do” (Luke 23:34). “Verily I say unto thee, To day shalt thou be with me in paradise” (23:43), as well as John 19:26, Matt. 27:46, Mark 15:34, John 19:28, Luke 23:46, and John 19:30 (“It is finished.”).