Issi ben Judah (Hebrew: איסי בן יהודה, "Issi ben Yehuda") was a Tanna of the late 2nd century and early 3rd century.
The Talmud cites a baraita Issi had several other names: With regard to Rabbi Yosei of Hutzal, it was taught: The Yosef of Hutzal mentioned in other places in the Gemara is the same person as Yosef the Babylonian.
[3][4]He was distinguished by the high esteem in which he held his colleagues, whose learning and ability he characterized in the most flattering terms.
[5] He ruled that the commandment to stand in the presence of the aged (Leviticus 19:32), which other rabbis believed applies only to an elderly Talmid Chacham, in fact applies to any aged person.
This remark was afterward incorporated in the Masorah, where it is noted that "there are five passages in the Pentateuch that have an undecided word.