Tabernacular is an uncommon word that refers to anything pertaining to a small shrine or tabernacle. If you're in need of synonyms to use in your writing, you can consider using words like "sacred," "holy," "divine," or "sacrosanct" to convey the same idea. Other options might include "shrine-like," "sanctuary," "hallowed," "revered," or "venerated." Additionally, you could also use words like "devout," which implies religious adherence or observance, or "pious," which denotes deep religious belief and dedication. Ultimately, there are many different ways you can convey the idea of tabernacular through the use of synonyms, so choose the words that work best for your particular context.