The big idea of this book (that echoes the big idea of the Old Testament) is that the God of ancient Israel (who is the creator of heaven and earth) is a God in relationship, who is ready and able to make commitments and who is impinged upon by a variety of "partners" who make a difference in the life of God.
This suggests that the defining category for faith in the Old Testament is dialogue, whereby all parties-including God-are engaged in a dialogic exchange that is potentially transformative for all parties . . . including God.
The reason is that human persons in human community are designed for serious, validating relationships that call for mutual care and responsibility; no amount of power, technology, or commodity can be substituted for relatedness. Thus Israel's great confession of faith is that at the bottom of reality there is the fidelity of a holy God who seeks relatedness with appropriate partners.
There is no doubt that God's first partner is Israel as