Except he already came "a second time." You might recall that he died and was placed in a tomb with a large stone sealing the entrance...... then, a few days later......
Now after the Sabbath, at dawn on the first day of the week, Mary Magdalene and the other Mary went to look at the tomb. Suddenly there was a severe earthquake, for an angel of the Lord1 descending from heaven came and rolled away the stone and sat on it. His appearance was like lightning, and his clothes were white as snow. The guards were shaken and became like dead men because they were so afraid of him. But the angel said to the women, “Do not be afraid; I know that you are looking for Jesus, who was crucified. He is not here, for he has been raised, just as he said. Come and see the place where he was lying. Then go quickly and tell his disciples, ‘He has been raised from the dead. He is going ahead of you into Galilee. You will see him there.’ Listen, I have told you!” So they left the tomb quickly, with fear and great joy, and ran to tell his disciples. But Jesus met them, saying, “Greetings!” They came to him, held on to his feet and worshiped him. Then Jesus said to them, “Do not be afraid. Go and tell my brothers to go to Galilee. They will see me there.”
The story is then picked up again in the book of Acts>>>
I wrote the former account, Theophilus, about all that Jesus began to do and teach until the day he was taken up to heaven, after he had given orders by the Holy Spirit to the apostles he had chosen. To the same apostles also, after his suffering, he presented himself alive with many convincing proofs. He was seen by them over a forty-day period and spoke about matters concerning the kingdom of God.