And when he had said these things, as they were looking on, he was lifted up, and a cloud took him out of their sight.
I would like to imagine what it would have been like to have been with Jesus' disciples on earth. At this moment the culmination of three years with the Master, as they witnessed His arrest, trials, death and resurrection, they must have stood there speechless as He left them. They had just had weeks with Him again post-resurrection, think about that... weeks talking and walking with a man who rose from the dead... and then one day on a hill He informs them they are to make disciples of the world and just lifts up away from them into the clouds.
They were so dumbstruck that God had to send two angels to remind the silent crowd of disciples to go do what Jesus had just said! They were so shocked by His departure that they stood around craning their necks for another glimpse of Him in the sky! But now was the time to work like He had just commanded them to do.
And this work of spreading the gospel everywhere to every person possible is still His command for His followers. Standing in wonder at God must never supplant the work of the Great Commission. Both of them must happen. Worship and disciple making must be what His disciples always do. Jesus left us expecting we would do it.