Matthew 28:10 Then Jesus said to them, “Do not be afraid. Go and tell My brethren to go to Galilee, and there they will see Me.”
Jesus wanted to make sure people knew He had risen from the grave; not to show off but to make sure people understood He was keeping His promises!
From the initial sighting by Mary to the multitude who saw Him later, we have many witnesses who testified how Jesus came back to life; just as He had promised.
Trusting Christ is not really trusting the unseen because we do have witnesses and we have it all in writing – we just have a society which would rather hide their shame than face it in front of Christ!