If, by "they," the question inquires about what they, Joseph of Arimathaea and Nicodemus, did to Jesus when He died:
"...He [Joseph] came therefore, and took the body of Jesus. And there came also Nicodemus, which at the first came to Jesus by night, and brought a mixture of myrrh and aloes, about an hundred weight. Then took they the body of Jesus, and wound it in linen clothes with the spices, as the manner of the Jews is to bury. Now in the place where He was crucified there was a garden; and in the garden a new sepulchre, wherein was never man yet laid. There laid they Jesus therefore because of the Jews' preparation day; for the sepulchre was nigh at hand." (John 19:38-42)
That's what they did to Jesus.
Neither of those killed Jesus. Jesus died because he was crucified on the cross.
According to historical accounts, those who pierced Jesus were Roman soldiers who crucified him.
Jesus was crucified on a Friday.
No, Jesus was not crucified on an olive tree. He was crucified on a wooden cross.
Jesus didn't get arrested, as there we're no jails in those days, he was CRUCIFIED.
No, Joseph, the earthly father of Jesus, was not alive when Jesus was crucified.
The Roman empire was in power when Jesus was crucified.
Pontus Pilate sentenced Jesus to be crucified.
There were two criminals crucified with Jesus.
The two individuals who were crucified with Jesus on the cross were criminals.
No. Jesus was crucified to clean the souls of all mankind if you accept that he died for you.
Jesus Christ was crucified in the year 30 AD.