Final answer:
The myth explains the abilities to think, and the creation of water, land, fire, sun, air, people, and animals according to a particular cultural narrative.
Step-by-step explanation:
The creation myth you've described explains several elements of the world and life within it according to that particular cultural narrative. It explains the origin of the ability to think as the mind was created first by the deity. It further elucidates the creation of water and land, where water was produced as the deity moved, and froth on the water solidified to become earth. The division of the deity into three parts explains the existence of fire, sun, and air. Moreover, from the splitting of the deity into two, husband and wife, and their subsequent union, the myth accounts for the origin of people and animals, thus explaining a shared genesis between humans and other forms of life such as cows.