Summary: Luke begins his account to Theophilus about what the Apostles did after Jesus ascended back to heaven for an unrevealed amount of time. We hear about two mean in white explaining that Jesus will return the same way. Also, there is more detail given about how Judas Iscariot killed himself. Read from the World English Bible.
I read from the 2016 edition, linked to below:
There is also a 2019 edition: