'resurrect' from Latin resurgere, resurrect - to rise again. raised from the grave, not necessarily directly to spirit. Since the disciples had not witnessed it before that time, it had to be shocking in their grief of his loss that it was possible.

You said the disciples only 'heard' but did not see Jesus die. JOHN was a disciple, who wrote. John19:25 ...But there were standing by the cross of Jesus his mother, and his mother's sister Mary, & Mary Magdalene. Jesus spoke to John. Joseph of Arimathea was there (John 19:38). Note John 19:34 that one of the soldiers speared his side and 'blood and water poured forth'. There were no fluids to aid in resuscitation.

If we can believe Jesus' words that he was flesh, why not the 'two men' at the tomb in Luke who told the ladies he was risen.