@Jainarayan I wish to make clear to you that I subscribe to the position of a number of the earliest Church Fathers in the Catholic tradition which deplores the death penalty, for instance the Christian apologist Lactantius (c. 250 – c. 325):
Ante-Nicene Fathers/Volume VII/Lactantius/The Divine Institutes/Book VI/Chap. XX - Wikisource, the free online library
Ante-Nicene Fathers/Volume VII/Lactantius/The Divine Institutes/Book VI/Chap. XX
For he who reckons it a pleasure, that a man, though justly condemned, should be slain in his sight, pollutes his conscience as much as if he should become a spectator and a sharer of a homicide which is secretly committed.[4]And yet they call these sports in which human blood is shed. So far has the feeling of humanity departed from the men, that when they destroy the lives of men, they think that they are amusing themselves with sport, being more guilty than all those whose blood-shedding they esteem a pleasure.
I ask now whether they can be just and pious men, who, when they see men placed under the stroke of death, and entreating mercy, not only suffer them to be put to death, but also demand it, and give cruel and inhuman votes for their death, not being satiated with wounds nor contented with bloodshed. Moreover, they order them, even though wounded and prostrate, to be attacked again, and their caresses to he wasted[5] with blows, that no one may delude them by a pretended death.
They are even angry with the combatants, unless one of the two is quickly slain; and as though they thirsted for human blood, they hate delays. They demand that other and fresh combatants should be given to them, that they may satisfy their eyes as soon as possible.
Being imbued with this practice, they have lost their humanity. Therefore they do not spare even the innocent, but practice upon all that which they have learned in the slaughter of the wicked. It is not therefore befitting that those who strive to keep to the path of justice should be companions and sharers in this public homicide.
For when God forbids us to kill, He not only prohibits us from open violence,[6] which is not even allowed by the public laws, but He warns us against the commission of those things which are esteemed lawful among men. Thus it will be neither lawful for a just man to engage in warfare, since his warfare is justice itself, nor to accuse any one of a capital charge, because it makes no difference whether you put a man to death by word, or rather by the sword, since it is the act of putting to death itself[7] which is prohibited. Therefore, with regard to this precept of God, there ought to be no exception at all; but that it is always unlawful to put to death a man, whom God willed to be a sacred animal.[8]
Pope Francis holds to this earlier understanding as well, which he wants to make mandatory for Catholics. I support him:
Pope Francis: revise catechism to show death penalty is ‘inadmissible’ | CatholicHerald.co.uk
The death penalty, no matter how it is carried out, “is, in itself, contrary to the Gospel,” Pope Francis said.
Marking the 25th anniversary of the Catechism of the Catholic Church at the Vatican on October 11, Pope Francis said the catechism’s discussion of the death penalty, already formally amended by St John Paul II, needs to be even more explicitly against capital punishment.
Capital punishment, he said, “heavily wounds human dignity” and is an “inhuman measure.”
“It is, in itself, contrary to the Gospel, because a decision is voluntarily made to suppress a human life, which is always sacred in the eyes of the Creator and of whom, in the last analysis, only God can be the true judge and guarantor,” the Pope said.
The death penalty, he said, not only extinguishes a human life, it extinguishes the possibility that the person, recognizing his or her errors, will request forgiveness and begin a new life.
In the past, when people did not see any other way for society to defend itself against serious crime and when “social maturity” was lacking, he said, people accepted the death penalty as “a logical consequence of the application of justice.”
“Let us take responsibility for the past and recognize” that use of the death penalty was “dictated by a mentality that was more legalistic than Christian,” Pope Francis said. “Remaining neutral today when there is a new need to reaffirm personal dignity would make us even more guilty.”
This is my religious and moral approach to the issue.