Justus in the Bible Encyclopedia - ISBE
jus'-tus (Ioustos): There are three of this name mentioned
in the New Testament.
(1) It was the Roman surname of JOSEPH BARSABBAS (which see)
(2) A Corinthian proselyte (sebomenos ton Theon), whose
house adjoined the synagogue and who received Paul when the
Jews opposed him (Acts 18:7). He was probably a Roman
citizen, one of the colonies, and so he would be of
assistance to the apostle in his work among the better class
of Corinth. There is some disagreement among manuscripts
regarding the name. Textus Receptus of the New Testament
gives "Justus" alone. the Revised Version (British and
American) following Codex Sinaiticus, Codex E, Vulgate,
Bohairic, Armenian, gives "Titus Justus"; Westcott and Hort,
The New Testament in Greek, Tischendorf, Codex Vaticanus,
Codex Bezae, give "Titius Justus"; Cheyne (EB, under the
word "Justus") thinks these forms a corruption of "Tertius
Justus," and that the bearer of the name was the "Tertius"
of Rom 16:22. Paul still continued his lodgings with Aquila
and Priscilla, but made the house of Justus his own
(3) A Jew, Jesus Justus, mentioned with Mark and Aristarchus
by Paul in his letters to the Colossians (Col 4:11), is a
fellow-worker and one that had been a comfort unto him.
S. F. Hunter