CCCC,
"I believe that our God is omniscient and omnipotent"
Do you believe that God can smite someone who displeases him? If you don't believe God would smite someone who displeases him is it ok if he gets one of his believers to smite them? A yes or no answer is ok, please don't quote Bible scripture.
I am not answering in terms of "displease", for what it might take to displease God to such an extent, and what His reason might be for smiting, are beyond my full comprehension.
But -
do I "believe that God can smite someone"? Yes, I believe that He can. He is omnipotent.
"Is it OK if He gets one of His beleivers to smite them"? I am not equipped to pass judgement on what might be "OK" for God to do in achieving His purposes. He knows that - He is omniscient.
With regard to your request, rarely, if ever, do I quote Scripture verses/passages in these discussions. If a discussant is knowledgeable of the Scripture, there seems no need to quote. If the discussant is not knowledgeable of Scripture, such a quote is not likely to be useful or effective due to contextual matters - and disinterest.
