Have your battery tested and replaced if it's bad, one symptom of a battery going bad or is close to being discharged is the rear wiper will come on by itself, usually it will only do one wipe when you turn the ignition on, and it might have done that and then the battery would not start the vehicle.

It's also possible the battery isn't bad but the alternator is bad and not charging the battery properly so have it tested as well, it's also possible that both the alternator and the battery are bad but are just on their last leg and need replacing.

Sometimes a bad battery can damage the alternator and vise versa, a bad alternator damaging the battery.