Jerome

Take what is yours and go. I want to give to this last worker the same as I give to you. Or is it not lawful for me to do what I want with my own money? Is your eye evil because I am good? So the last will be first, and the first last. For many are called, but few are chosen.

Commentary on Matthew ↗

Gregory the Dialogist

Hence the same householder says: "I wish to give to this last one even as to you." And because the very reception of the kingdom is the goodness of His will, He rightly adds: "Or is it not lawful for me to do what I wish?" For it is a foolish complaint of man against the kindness of God. For there would be no cause for complaint if He does not give what He does not owe, but only if He did not give what He owed.

Forty Gospel Homilies, Homily 19 ↗

Thomas Aquinas

Take what is yours, i.e., what you have by my promise, and go, into glory. 2 Timothy 1:12: I know whom I have believed, and I am certain that he is able to keep that which I have committed unto him against that day. Some explain it thus: take what is yours, i.e., damnation for your murmuring, and go into eternal fire. But this cannot be, because he says that they received each their denarius. Next, he sets forth the mercy bestowed, saying, but I will that to this last also I should give even as to you. …

Commentary on Matthew ↗