Temples and spiritual dwellings are common in dreams. This is because many dreams include events of cleansing, preparation, moral judgment, or divine communication. Often times, these dreams occur at times in your life when inner peace is elusive and sought after.
Often, such dreams involve strangers as temple ministers or priests. These ministers will often give clues about what type of temple service is needed and what area of your life is to be effected. They may be presented as all older than you, all of one particular gender, or dressed in particular ways.
If ministers and priests are absent from the temple, that could indicate an inner journey or struggle that needs resolution, versus the outer moral choices illustrated above.