In my former book, Theophilus, I wrote about all that Jesus began to do and to teach until the day he was taken up to heaven, after giving instructions through the Holy Spirit to the apostles he had chosen. After his suffering, he presented himself to them and gave many convincing proofs that he was alive.
Bishop TD Jakes has said this the best. After all that Jesus has shown you. Do you still doubt him? How many times does he have to die and come back to get you to believe in him. You will camp out for days to get the latest phone or concert tickets but do not have time to thank him for all he has done.