▁in ▁ 1 9 3 8 . ▁They ▁ ▁subsequently ▁had ▁two ▁children , ▁Bent z ion ▁and ▁Y o che ved . ▁ ▁In ▁ 1 9 5 9 , ▁the ▁family ▁moved ▁to ▁Seattle , ▁where ▁Riv kin ▁became ▁the ▁ra bbi ▁of ▁Cong reg ation ▁B ik ur ▁Ch ol im . ▁In ▁ 1 9 7 0 , ▁they ▁moved ▁to ▁Queens , ▁N . Y ., ▁where ▁Riv kin ▁served ▁as ▁ra bbi ▁of ▁Young ▁Israel ▁of ▁W ave c rest ▁and ▁B ays water . ▁ ▁National ▁Beth ▁Din ▁judge ▁After ▁moving ▁to ▁Queens , ▁Riv kin ▁was ▁appointed ▁chief ▁judge ▁( day an ) ▁of ▁the ▁Beth ▁Din ▁( C ourt ▁of ▁Jewish ▁Law ) ▁of ▁ ▁America ▁Rab bin ical ▁Council ▁of ▁America . ▁He ▁held ▁this ▁post ▁for ▁ 1 5 ▁years . ▁ ▁Rab bi ▁Riv kin ▁was ▁known ▁for ▁his ▁comp ass ion ▁and ▁sens itivity ▁in ▁dealing ▁with ▁often ▁sensitive ▁issues . ▁ ▁He ▁was ▁a ▁ren owned ▁expert ▁in ▁hal ak ha ▁( J ew ish ▁law ), ▁and ▁an ▁international ▁authority ▁on ▁Jewish ▁divor ce ▁law . ▁R abb is ▁and ▁rabb in ical ▁courts ▁from ▁all ▁over ▁the ▁world ▁consult ed ▁him ▁on ▁these ▁matters . ▁He ▁also ▁tra ve led ▁to ▁the ▁Soviet ▁Union ▁to ▁perform ▁Jewish ▁religious ▁divor ces . ▁Riv kin ▁was ▁often ▁at ▁the ▁fore front ▁of ▁dealing ▁with ▁new ▁issues ▁in ▁the ▁area ▁of ▁Jewish ▁family ▁law . ▁For ▁example , ▁in ▁the