Avigad published on many topics, notably on Hebrew seals. One of the seals found by him in 1964 has been tentatively identified as belonging to Queen Jezebel, mentioned in the Bible:[3] however, this identification is contested by others.[4] According to Bible scholar Frank Moore Cross, Avigad “was Israel’s most distinguished epigraphist in his generation, and one of the great figures in the history of Hebrew and Jewish epigraphy.”[5]