On this octave of the Ascension, Dom Gueranger gives us this glimpse into the transformation that has occurred in the apostles:
Before the Ascension the disciples were as inconstant in their love as they were in their faith. Jesus could not trust them. But no sooner had He left them, than they became warmly devoted to Him. Instead of complaining of their bereavement, they returned full of joy to Jerusalem. The thought of their master’s triumph made them forget their own loss, and they hastened, as He bade them, to the cenacle, where they were to be endued with power from on high.