According to the general consensus of the church, there is an indication in this record (creation) of the Trinity. The Father created heaven and earth out of nothing through the Son, whom Moses calls the Word. Over these the Holy Spirit broods. A hen sits on eggs as though giving them life by her warmth. So Scripture says that the Holy Spirit brooded, so to speak, over the waters in order to give life to substances which were to be animated and beautified; for it is the office of the Holy Spirit to give life.
(What Luther Says - #4453)