Before creation, God was love itself and wisdom itself. That love and that wisdom had a drive to be useful. Without usefulness, love and wisdom are only fleeting abstract entities, and they do indeed fly away if they do not move in the direction of usefulness. The two prior things without the third [love and wisdom without usefulness] are like birds flying across a great ocean that eventually become worn out, fall into the ocean, and drown.
God created the universe so that usefulness could exist. Therefore the universe could be called a theater of useful functions. Because we, the human race, are the principal reason for creation, it follows that absolutely everything else was created for our sake. All aspects of the divine design have been brought together and concentrated in us so that God can perform the highest forms of useful service through us.
Without usefulness as a third party, love and wisdom would be as unreal as the heat and light of the sun would be if they had no effect on people, animals, and plants. That heat and that light become real by flowing into things and having an effect on them.
Another set of three things that follow in order is purpose, means, and result. The learned world knows that a purpose is nothing unless it has reference to an efficient cause or means; and the purpose and the means are nothing unless there is a result. We can of course contemplate a purpose and the means of accomplishing it purely in our minds, but we still do so only for the sake of the result that the purpose intends and that the means make possible.
Likewise with love, wisdom, and useful service. Useful service is what love intends and what it occasions through the means. When useful service results, love and wisdom take on a real existence. In that useful service, they set up a place for themselves to live and stay, and there they rest as if they were at home. We are that way ourselves when God’s love and wisdom are in us and we do something useful. The reason we were created images and likenesses of God, or forms of the divine design, was so that we would be able to do God’s useful services.
from True Christianity, Section 67