4 Facts of the Resurrection
1) Christ was crucified on a cross & buried2) Christ's tomb was EMPTY
3) His disciples believed they saw Him arisen from the dead
4) Christ's disciples were transformed & all but John went on to die a martyrs death as a result
As Paul testifies via Scripture down to us - After that, he was seen of above five hundred brethren at once; of whom the greater part remain unto this present, but some are fallen asleep.
1 Corinthians 15:6