Justus

The name Justus is borne by three figures in the early-church period; only one of them survives into UPDV scope. The disciple nominated alongside Matthias as a candidate for Judas Iscariot's place (Ac 1:23) and the Corinthian believer who hosted Paul (Ac 18:7) both fall in Acts, which UPDV does not carry. What remains is a single greeting from the closing of Colossians.

Jesus called Justus

Writing from prison, Paul names Justus alongside Aristarchus and Mark as Jewish coworkers who have stayed with him: "and Jesus who is called Justus, who are of the circumcision: these [are my] only coworkers to the kingdom of God, men who have been a comfort to me" (Col 4:11). The double name — Jesus Justus — distinguishes him from other Jesuses; the bracketed [are my] is a UPDV insertion supplying the implicit subject. The verse fixes him as a Jewish-Christian companion in Paul's Roman circle and a source of comfort to the apostle in his confinement.