He indeed is the god who pervades all regions: he is the first-born (as Hiranyagarbha), and he is in the womb. He has been born, and he will be born. He stands behind all persons, looking everywhere.

In plain words: This God fills every direction. He was the first one born, called Hiranyagarbha, the golden source of creation, and he is in every womb. He was born and will be born again, and he stands behind every person, seeing everything.