The Disciples Needed to Understand The New Life in the Resurrection

How could the disciples understand what had had just happened with Jesus.  Je died.  He was buried.  And three days later he rose from the dead.  What does it mean?  It is beyond experience, it is beyond science and it is beyond mental comprehension.  Jesus appears to the diciples many times in o0rder to show them the several meanings of the Resurrection Reality.