The Resurrection proofs this for all times!
Jesus Christ our Lord, who was marked out the SON OF GOD in power, according to the Spirit of holiness,
by THE RESURRECTION of the dead,
He is not here,he has risen!
Why do you seek the living among the dead?
Without Jesus rising from the dead, all that he said and did in the 3 years prior to his crucifixion and death, would have been for nothing! He would have went down in History as just another teacher of God who preached well but who suffered an awful end.
The Resurrection proofs once and for all times that Jesus Christ IS the Son of God!