Albert Barnes Commentary Colossians 4:11

"and Jesus that is called Justus, who are of the circumcision: these only [are my] fellow-workers unto the kingdom of God, men that have been a comfort unto me." — Colossians 4:11 (ASV)

And Jesus which is called Justus. The name Jesus was probably the one he bore among the Jews. Justus is a Roman name, and was probably the one by which he was known among the Romans. It was not uncommon to assume another name in this way when one went among a foreign people .

Who are of the circumcision. Jews, or Jewish Christians. Nothing more is known of Justus.

These only are my fellow-workers unto the kingdom of God. The word "only," here, probably refers to the fact that they alone, of all the Jews who were at Rome, assisted Paul in his work. Epaphras and Luke were also with him at Rome, and undoubtedly aided him.

Which have been a comfort unto me. The more so because they were Jews. The other Jews in Rome stood aloof, and undoubtedly endeavoured to increase the trials of the apostle .

(The term "fellow-workers" may also be understood as "labourers.")