In my Rajput ancestry we have a few such ancestors that we call upon every year so they can interact with us and help solve some problem and simply got blessings. Its always the chosen one same person every year who the deity possesses and speaks through. Those individuals have to be extremely pure of everything in their daily life for thise pure energies to enter them on the holy days that come once a year. They always say afterwards how sore and tired their body feels afterwards. Its a lot of immense energy that takes over even for short period of time. Truly amazing. 🙏