▁Rab bi , ▁Rab bi ▁Av raham ▁Y itz ch ak ▁Ha C ohen ▁K ook . ▁Rab bi ▁T z vi ▁Ye h ud ah ▁became ▁his ▁for em ost ▁teacher , ▁and ▁A vin er ▁became ▁one ▁of ▁his ▁leading ▁students . ▁During ▁this ▁time , ▁he ▁also ▁served ▁as ▁a ▁soldier ▁in ▁the ▁Israel ▁Def ense ▁Forces , ▁particip ating ▁in ▁the ▁Six - Day ▁War ▁and ▁the ▁Y om ▁K ipp ur ▁War , ▁ear ning ▁the ▁rank ▁of ▁Lieutenant . ▁At ▁the ▁direction ▁of ▁Rab bi ▁Z vi ▁Ye h uda ▁K ook , ▁he ▁joined ▁a ▁group ▁that ▁was ▁sett ling ▁Heb ron , ▁and ▁learned ▁Tor ah ▁there . ▁▁ ▁In ▁the ▁year ▁ 1 9 7 1 , ▁Rav ▁A vin er ▁became ▁the ▁ra bbi ▁of ▁K ib but z ▁L avi ▁in ▁the ▁Lower ▁Gal ile e , ▁where ▁he ▁spent ▁half ▁of ▁his ▁day ▁working ▁in ▁the ▁farm . ▁A ▁number ▁of ▁years ▁later , ▁he ▁left ▁L avi ▁to ▁serve ▁as ▁the ▁Rab bi ▁of ▁Mos hav ▁K es het ▁in ▁the ▁Gol an ▁He ights . ▁▁ ▁In ▁ 1 9 8 1 , ▁he ▁accepted ▁the ▁position ▁of ▁ra bbi ▁of ▁Beit ▁El ▁( A le ph ), ▁in ▁the ▁B iny amin ▁region ▁of ▁the ▁Sh om ron . ▁Two ▁years ▁later , ▁he ▁also ▁became ▁the ▁Ros h ▁Yes h iva ▁of ▁the ▁new - est ab lished ▁Yes h iv at ▁A ter et ▁Y er