I've always been fascinated by how words carry whole worlds, and in Tagalog the concept of a deity is layered and living. In old Tagalog cosmology the big name you'll hear is 'Bathala' — the creator-supreme who sits at the top of the spiritual hierarchy. People would address Bathala with reverence, often prefacing with 'si' or 'ang' in stories: 'Si Bathala ang lumikha.' That very specific use marks a personal god, not an impersonal force.
Beneath Bathala are different types of beings we casually lump together as deities: 'diwata' for nature spirits and guardians, and 'anito' for ancestral or household spirits. 'Diwata' often shows up in tales as forest or mountain spirits who demand respect and offerings; 'anito' can be carved figures, altars, or the spirits of dead relatives who are consulted through ritual. Priests and ritual specialists mediated between humans and these entities, performing offerings, rituals, and propitiations.
Colonial contact layered meanings on top of this vocabulary. 'Diyos', borrowed from Spanish, became the everyday word for the Christian God and also slipped into casual exclamations and expressions. Meanwhile, 'diwata' and 'anito' persisted in folklore, sometimes blending with Catholic saints in syncretic practices. To me, that blend — the old reverence for land and ancestors combined with newer faiths — is what makes Filipino spirituality feel so textured and human.