While attending Ner Israel Rabbinical College from 1955–1969, Rabbi Zweig received rabbinical ordination (Yoreh Yoreh and Yadin Yadin) from Rabbi Yaakov Yitzchak Ruderman and Rabbi Yaakov Weinberg.
During his time at Ner Israel Rabbinical College from 1955 to 1969, Rabbi Zweig was awarded rabbinic credentials (Yoreh Yoreh and Yadin Yadin) by Rabbis Yaakov Yitzchak Ruderman and Yaakov Weinberg.