ations ▁were ▁invent ed , ▁script ures ▁do ▁not ▁specifically ▁address ▁the ▁topic ▁of ▁v acc ination . ▁However , ▁v acc ination ▁has ▁been ▁opposed ▁on ▁religious ▁grounds ▁ever ▁since ▁it ▁was ▁first ▁introduced . ▁Some ▁Christian ▁oppon ents ▁argued , ▁when ▁v acc ination ▁was ▁first ▁becoming ▁w ides p read , ▁that ▁if ▁God ▁had ▁decre ed ▁that ▁someone ▁should ▁die ▁of ▁small po x , ▁it ▁would ▁be ▁a ▁sin ▁to ▁th wart ▁God ' s ▁will ▁via ▁v acc ination . ▁Relig ious ▁opposition ▁continues ▁to ▁the ▁present ▁day , ▁on ▁various ▁grounds , ▁raising ▁eth ical ▁difficulties ▁when ▁the ▁number ▁of ▁un v acc in ated ▁children ▁threat ens ▁harm ▁to ▁the ▁entire ▁population . ▁Many ▁govern ments ▁allow ▁parents ▁to ▁opt ▁out ▁of ▁their ▁children ' s ▁otherwise ▁mand atory ▁v acc in ations ▁for ▁religious ▁reasons ; ▁some ▁parents ▁f als ely ▁claim ▁religious ▁belief s ▁to ▁get ▁v acc ination ▁exem ptions . ▁ ▁J uda ism ▁supports ▁v acc ination . ▁Among ▁early ▁Has id ic ▁leaders , ▁Rab bi ▁Nach man ▁of ▁Bres lov ▁( 1 7 7 2 – 1 8 1 0 ) ▁was ▁known ▁for ▁his ▁criticism ▁of ▁the ▁do ctors ▁and ▁medical ▁treat ments ▁of ▁his ▁day . ▁However , ▁when ▁the ▁first ▁v acc ines ▁were ▁successfully ▁introduced , ▁he ▁stated : ▁" Every ▁parent ▁should ▁have ▁his ▁children ▁v acc in ated ▁within ▁the ▁first ▁three ▁months ▁of ▁life . ▁Fail ure ▁to ▁do ▁so ▁is