The Father is who he is by virtue of his relationship with the Son. Think again of the image of the fountain: a fountain is not a fountain if it does not pour forth water. Just so, the Father would not be the Father without his Son (whom he loves through the Spirit). And the Son would not be the Son without his Father. He has his very being from the Father. And so we see that the Father, Son and Spirit, while distinct persons, are absolutely inseparable from each other. Not confused, but undividable. They are who they are together. They always are together, and thus they always work together.