Resurrection Sunday – As Peter and John visit the empty tomb, there are three ways of "seeing" that happen. First, just a glance. Second, more investigation. Third, seeing with the eyes of the heart. In similar fashion, there are three ways of seeing Jesus today: Either he is "a" savior; he is "the" Savior; or he is "your" Savior.
The Spirit came, and a crowd assembled when they heard the noise. But, upon hearing these Galileans speak other languages fluently, they assumed these hillbillies had been drinking before prayer. Peter, now filled with the Spirit, stands up and corrects them, giving the first explicitly Christian sermon ever given.