From my feeble understanding, this concept of Wakan Tanka is the creative force that binds and generates life. That exists beyond time and space. It is in no way anthropomorphic. Wakan Tanka is not a dude, being, entity, or demiurge. It is the mysterious power of the seven directions: north, south, east, west, up into the sky, down into the earth, and, finally, the seventh direction, the internal (inside the chest, the heart, the soul). Wakan Tanka is the God of our ancestors and binds us to them and is experienced in connection to the wind, the sunlight, the grasslands, and the water.