Whakaotihia te rerenga e whai ake nei: I whanau a Ephraim Elimelech Urbach i Białystok, Poland, ki tetahi whanau Hasidic. I ako ia i Roma me Breslau, i reira i whakawhiwhia ai ia ki te whakahaerenga. I heke ia ki te Mana Whakahaere o Palestine i te tau 1937. I mahi ia hei kaitiaki i roto i te ope o Ingarangi i te Pakanga Tuarua o te Ao. I whai wāhi hoki ia ki ngā pakanga a Iharaira
1948 War of Independence a muri iho i mahi mo nga whare maatauranga maha i mua i te whakauru atu ki te whare wananga o te Whare Wananga o Hepreu i te tau 1953.