Luke 23:50

Now mystically, the just man buries the body of Christ. For the burial of Christ is such as to have no guile or wickedness in it. But rightly did Matthew call the man rich, for by carrying Him that was rich he knew not the poverty of faith. The just man covers the body of Christ with linen. Do thou also clothe the body of Christ with His own glory, that thou mayest be thyself just. And if thou believest it to be dead, still cover it with the fulness of His own divinity. But the Church also is clothed with the grace of innocence.

A counsellor, or decurio, is so called because he is of the order of the curia or council, and administers the office of the curia. He is also wont to be called curialis, from his management of civil duties. Joseph then is said to have been of high rank in the world, but of still higher estimation before God; as it follows, A good man, and a just.

(Photius.) Joseph had been at one time a secret disciple of Christ, but at length bursting through the bonds of fear, and become very zealous, he took down the body of our Lord, basely hanging on the cross; thus gaining a precious jewel by the meekness of His words. Hence it follows, And, behold, there was a man named Joseph, a counsellor.