When they gathered together because of Jesus and devoted themselves to prayer, their eyes were no longer fixed on their differences. They didn’t feel they had the luxury of time in which to debate theological points. They knew Jesus had spoken, had told them that they would be witnesses to him, had commanded them to wait for the promise from the Father. So they did. 

Uncommon, radical unity was not formed for some idealistic principle, or some pragmatic need. Uncommon, radical unity was formed around devotion to Jesus, expectation of the promise, and waiting in prayer. So must it be found in our day.