He worked with Moshe Goshen-Gottstein and Chaim Rabin on the Hebrew University Bible Project, and since their deaths has served as its editor in chief.
His dissertation, written under the guidance of Professors Shemaryahu Talmon of the Hebrew University and Frank Moore Cross of Harvard University, was submitted to the Hebrew University in 1973 as “The Septuagint Translation of Jeremiah and Baruch.”