Can prayer cause things to happen that would not have happened if we didn't pray? It is possible that there will be things in this life that we won't have unless we ask it from God? Doesn't God's will stand alone without our prayers?
James 4:2
ESV - 2 You desire and do not have, so you murder. You covet and cannot obtain, so you fight and quarrel. You do not have, because you do not ask.
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When I was young they would say "that is a million dollar question!" With inflation it's probably a billion dollar question today and I look forward to reading your subscriber's answers.