A seamless transition

I never noticed before, but it says in Acts 1 that "He [Jesus] appeared to them over a period of forty days and spoke about the kingdom of God." His message after his resurrection was basically the same as that during his ministry. Emphasising the kingdom of God. His disciples where still thinking in terms of just Isreal, and Jesus response is basically the same thing as the end of Luke. Wait for the Holy Spirit, then you will be ready. And when that happens you will be my witnesses in Jerusalem, and in all Judea, and Samaria, and to the ends of the earth.

The disciples had no idea what they were getting into, but one thing was certain. Being a witness to Jesus and the kingdom of God was going to consume the rest of their lives. There was no going back to the way life was before they met Jesus. I think this gives us a little insight into the nature of the kingdom. It consumes your whole life when you really understand it.