Heres my 3 cents. I think many do focus on fitting God into their will, and even serve him for "personal gain". But there are also some that realize God has a will and a purpose, and we are suppose to find what His will & purpose is, and see what manner of "role" we "play" in bringing His will to pass(even without personal gain). I believe He does in fact
need us to perform this.
1 Cor. 5:15And he died for all, that
those who live should no longer live for themselves but for him who died for them and was raised again.
16So from now on we regard no one from a worldly point of view. Though we once regarded Christ in this way, we do so no longer. 17Therefore, if anyone is in Christ, he is a new creation; the old has gone, the new has come! 18All this is from God, who reconciled us to himself through Christ and
gave us the ministry of reconciliation: 19that God was reconciling the world to himself in Christ, not counting men's sins against them. And he has
committed to us the message of reconciliation. 20We are therefore
Christ's ambassadors, as though God were making his appeal through us. We implore you on Christ's behalf:
Be reconciled to God. 21God made him who had no sin to be sin[a] for us, so that in him we might become the righteousness of God.
I believe we not only need Him, but I believe he needs us, and that is why he makes His appeal THRU us.
Myles Munroe puts out some good books concerning the Kingdom
I have his book "Rediscovering the Kingdom". Its a good book. I need to read his others.