The book of Luke ends with these verses:
When he had led them out to the vicinity of Bethany, he lifted up his hands and blessed them. While he was blessing them, he left them and was taken up into heaven. Then they worshiped him and returned to Jerusalem with great joy. And they stayed continually at the temple, praising God. — Luke 24:50-53 (NIV)
Over the past several months, Jesus had tried more than once to explain his coming death and resurrection. His disciples could not hear that message. When the time came, they basically fell apart. They ran away. Peter even denied knowing him. They cowered between locked doors, their hopes and dreams dashed–even a week after Jesus first appeared to them.
After a while, they got used to having Jesus around again. It seemed like old times, especially when they met in Galilee. They felt joyful and confident, but Jesus did not intend to stay with them and lead them as he had before. He intended to leave again.
So he did. And they returned broken and dispirited to their hideaway in Jerusalem, abandoned again for the second time in a little over a month?
No! They worshiped Jesus after they could no longer see him and returned with joy and continually went to the temple, a very public place where they were all recognized, and praised God. In an earlier post, I expressed the opinion that miracles are compatible with science so long as we posit a fourth spatial dimension, which we cannot directly experience. The disciples had seen evidence of the fourth dimension and received new boldness. We can receive that boldness, too.