To extrapolate, these gods/deities can be seen and are in some kind of physical form or another (perhaps they possess living creatures or just create bodies of their own). They are essentially immortal and have been on the surface of the earth manipulating natural phenomenon (life, death, seasons, love, events, etc.) since the planet's creation.
How would you all suggest I go about implementing them?
Keep in mind I want them to remain relatively discreet. Also I've already considered the idea of making it so religious texts and stories are really the actions of the gods/deities or the result of factual events caused by the gods/deities that have been 'lost in translation', but that leads to the whole mess of sorting through over 4000 religions' literature and beliefs to create plausible explanations for a good amount of them. So any other ideas about how the 'real' gods/deities might go about interacting with the world and influencing it accordingly, but still remain anonymous?