There are two, one knowing (isvara), the other not-knowing (giva), both unborn, one strong, the other weak; there is she, the unborn, through whom each man receives the recompense of his works; and there is the infinite Self (appearing) under all forms, but himself inactive. When a man finds out these three, that is Brahma.

In plain words: Three things have always existed. There is God, who knows everything and is strong. There is the soul, which does not yet know and is weak. And there is nature, through which each person gets the results of their deeds. Behind them all is the endless Self, present in every form but not acting itself. Whoever understands these three knows Brahman.