what if ETs showed up and gave us free energy and said religions got it wrong?

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how would it affect you if Extraterrestrials showed up and announced they were going to put an end to wars by: 1) giving us free clean renewable energy source technology to break our dependence on dirty fossil fuel controlled by a few countries... 2)that we should stop dying and killing for all religions because they all got it wrong anyway and that they can show us proof... there's buzz all over the internet that disclosure is just around the corner...what then?