Ontologically twofold?

“To be a creature is to be constituted, to be made what one is, by and in a network of relationships. For want of better words, and provisionally only, we can say that these relationships are, ontologically, twofold: vertical and horizontal. I am using the terms as a metaphorical way of indicating relations with, respectively, God and the rest of creation”

Colin Gunton, Christ and Creation, p. 36.