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Pilgrim said:

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katartizo kat-ar-tid'-zo

A derivative of 739 [artios ar'-tee-os; fresh, i.e. (by implication) complete:--perfect.]; to complete thoroughly, i.e. repair (literally or figuratively) or adjust:--fit, frame, mend, <span style="background-color:yellow">(make)</span> perfect(-ly join together), prepare, restore.

Thanks, for confirming Joe K's poor translation. The sense is to take something and make it suitable, in this case, to destruction.