The Apostle Paul
Colossians 4:11ESV·traditional attribution

and Jesus who is called Justus. These are the only men of the circumcision among my fellow workers for the kingdom of God, and they have been a comfort to me.

John Calvin Reformed @genevareformer

11. These only are fellow-workers, — that is, of the circumcision; for he afterwards names others, but they were of the uncircumcision. He means, therefore, that there were few Jews at Rome who shewed themselves to be helpers to the gospel, nay more, that the whole nation was opposed to Christ.

Matthew Henry Presbyterian @wholebiblehenry

In the close of this epistle the apostle does several of his friends the honour to leave their names upon record, with some testimony of his respect, which will be spoken of wherever the gospel comes, and last to the end of the world. I. Concerning Tychicus, Col 4:7.

Commenting on Colossians 4:7-18

John Gill Reformed Baptist @doctorgill

And Jesus, which is called Justus,.... The former of these names is the same with Joshua, and was very frequent with the Jews, and the later a surname that was sometimes given to men remarkable for holiness and righteousness: so Joseph, called Barsabas, is surnamed Justus, Act 1:23 and James, the brother of our Lord, was called by the Jews James the Just (m): whether...