The 3 Main Reasons Why the Resurrection is True

Luke 24:1-12 
Why Christians do believed that Jesus rose from the dead? 
1. The fact of the empty tomb

1 Corinthians 15:17
2.  The fact of multiple witnesses 

Acts 1:3
1 Corinthians 15:3-6 
Acts 3:32
2 Peter 1:16  
3.  The fact of the changed lives of those who followed Jesus Christ 
John 20:19-20