I think this points to the difficulty of supporting the contention that Christ opposed capital punishment: the evidence goes the other way. Beyond that, if Christ really did oppose it, what does this say about the church that she could have been so wrong on this subject for so long? After 2000 years are we just coming to this understanding now?
What is more reasonable: that Christ did not oppose capital punishment or that the church failed to recognize his opposition for two millennia?And as the things which the Holy Synod of Trent decreed for the good of souls concerning the interpretation of Divine Scripture, in order to curb rebellious spirits, have been wrongly explained by some, We, renewing the said decree, declare this to be their sense, that, in matters of faith and morals, appertaining to the building up of Christian doctrine, that is to be held as the true sense of Holy Scripture which our Holy Mother Church has held and holds, to whom it belongs to judge the true sense and interpretation of the Holy Scripture; and therefore that it is permitted to no one to interpret the Sacred Scripture contrary to this sense, nor, likewise, contrary to the unanimous consent of the Fathers. (First Vatican Council)*
*The unanimous consent of the Fathers (excepting Tertullian and Lantanctius) was that capital punishment was permitted. I am aware of no Doctor of the Church who opposed it. Regarding what the Holy Synod of Trent taught, they were clear on this point:*Another kind of lawful slaying belongs to the civil authorities, to whom is entrusted power of life and death…
*Ender