God is infinite knowledge, infinite bliss and infinite power, (sat, chit ananda in Hinduism). Infinte knowledge, being infinite, contains finite knowledge, the kind that exists on Earth. Our purpose here is to know both, which is actually God knowing Himself.
It's nonexistence that has and hasn't been going on forever and will and won't go on forever. Nothing exist as nonexistence. God is infinite knowledge and consciousness is how God, who is Everything and everyone, knows Himself.