But you didn’t provide reasons, you simply made an assertion: “Punishment in general is not universally prohibited by Jesus … but killing is.” Do you not recognize that if Jesus universally prohibited killing then virtually every Father as well as every Doctor of the Church, plus every pope up to now, and all the catechisms and councils of the church were wrong? The church for 2000 years never understood Jesus to have prohibited all killing. If Jesus meant to do this how do you explain his direction to the soldiers:
Soldiers also asked him, “And we, what shall we do?” And he said to them, “Rob no one by violence or by false accusation, and be content with your wages.” (Lk 3:14)
Surely he would have told them to leave the army if what they were doing was sinful.
How can church teaching in one are (killing) contradict church teaching in another (punishment)? Surely what the church teaches on one subject must agree with what it teaches elsewhere. There is no conflict between these concepts; they must fit together as a unified whole.