Absolutely, to God is the true system. Those who set up allies besides Him: "We only serve them so that they may bring us closer to God." God will judge between them in what they dispute. Surely, God does not guide him who is a liar, an ingrate.
Translation endnotes
[39:3] There is not much difference between the Meccan polytheists and modern polytheists who turned Islam into a limited corporation or limited liability partnership. Those who expect their prophets and saints to one day intercede on their behalf are setting up partners with God, even though they do not admit it (6:23). Also, see 2:48.