In her Book of Merits, Saint Hildegard of Bingen has Mercy say,

If someone is broken, I’m there. If someone hurts, I listen. Why? Because I take the first Let there be literally.

In other words, to be is not separated from relationships. “Let there be light” means an interconnection between this light and other things and other attributes. “Let there be creatures in the air” relates them to other created things. They are not cut off. The first virtue of neighbourliness is to be, to exist with others.