Some skeptics suggest that instead of Jesus, some one else was crucified on the cross. This cannot be so because:-
The Bible says that Jesus' death was accompanied by darkness and an earthquake. What do the historians say?
"In the fourth year of the 202nd Olympiad [AD 32-33], a failure of the Sun took place greater than any previously known, and night came on at the sixth hour of the day [noon], so that stars actually appeared in the sky; and a great earthquake took place in Bithynia and overthrew the greater part of Niceaea," - Phlegon Trallianus records in his history, Olympiades. See John Chapman, Phlegon Examined Critically and Impartially (Cambridge University Press, London, 1734)
Phlegon was a Greek freedman who wrote his histories during the reign of Hadrian (117-138 AD). His birthplace, Tralles, was near Ephesus.
Phlegon's Olympiades are largely lost to history, but this fragment concerning the failure of the Sun is unusually well-attested. Seven ancient historians directly quote it: Eusibius, The Chronicon Alexandrinum, Syncellus, Jerom, Anastasius Bibliothecarius, The Historia Miscella and Freculphus Lexoviensis. Other ancients, such as Julius Africanus, Joannes Philoponus, Maximus, Malelas and Origen, cite Phlegon's account without quoting it.
Another historian, Julius Africanus also comments:-
"On the whole world there pressed a most fearful darkness; and the rocks were rent by an earthquake, and many places in Judea and other districts were thrown down. This darkness Thallus, in the third book of his History [written in ~52 AD], calls, as appears to me without reason, an eclipse of the sun."
Africanus realized that a solar eclipse cannot occur at the time of the Passover full moon. Note that within a few decades of the start of the church, the story of Christ's death and its accompanying darkness was well known and secular Romans felt the need to explain it away. A similar explanation by the Jews occurs in 'Acts of Pilate' (11.6), fourth century.
Jesus indeed died on that cross of Calvary - for you.