Jesus Christ has come to life again, as he said

The resurrection of Jesus Christ

He is not here, for he has come to life again, even as he said. Come, see the Lord’s resting-place.
Matthew 28:6

1Co 15:14 And if Christ did not come again from the dead, then our good news and your faith in it are of no effect.
1Co 15:15 Yes, and we are seen to be false witnesses of God; because we gave witness of God that by his power Christ came again from the dead: which is not true if there is no coming back from the dead.
1Co 15:16 For if it is not possible for the dead to come to life again, then Christ has not come to life again:
1Co 15:17 And if that is so, your faith is of no effect; you are still in your sins.
1Co 15:18 And, in addition, the dead in Christ have gone to destruction.
1Co 15:19 If in this life only we have hope in Christ, we are of all men most unhappy.
1Co 15:20 But now Christ has truly come back from the dead, the first-fruits of those who are sleeping.
Mat 28:18 And Jesus came to them and said, All authority has been given to me in heaven and on earth.