Hmm... actually....
PHB, pg 60 (Class write up for Cleric)
RAW it seems you could in fact chose to worship more than one deity and select their divinities feats.
Which does make some sense. I seem to recall that in ancient Rome and Greece many temple and priests were dedicated to many gods.
PHB, pg 60 (Class write up for Cleric)
As a cleric, the deity (or deities) your choose to revere goes a long way toward defining you, or at least how other people in the world see you.
RAW it seems you could in fact chose to worship more than one deity and select their divinities feats.
Which does make some sense. I seem to recall that in ancient Rome and Greece many temple and priests were dedicated to many gods.