In all honesty, my spiritual journey actually began as a boy. An accidental near-drowning gave me a NDE and an OBE that changed my views forever. Granted, as viewed from a child's perspective. But after imbibing LSD in 1977, I learned the power and illumination of sacred medicines. This naturally, led to my fascination for Yogic philosophy and practices. Yes, to this day I credit psychedelics with giving me a taste of Samadhi. But honoring the spiritual paths and bringing their teachings into my day-to-day existence has become secondary nature. And when speaking before an assemblage as you will be, my advice is to be as clear and concise as possible. Few lay persons can comprehend nonduality nor the living Spiritus, given their proclivity towards factual reasoning. Therefore, it's best to present your talk as not neccussarily being a "sermon" rather, a provocative invitation and as succinctly as you can. I feel that there is a definite science to enlightenment/ spiritual awakening and as such, there is a lot of ground to cover. Play it as rooted and clear headed as you can.
Namaste 🙏