But if you do what is evil, be afraid; for [the government] does not bear the sword for nothing; for it is a minister of God, an avenger who brings wrath upon the one who practices evil" (Romans 13:4).
Romans 12:19
Dear friends, never take revenge. Leave that to the righteous anger of God. For the Scriptures say, "I will take revenge; I will pay them back," says the LORD.
Revelation 13:10, "If any one is destined for captivity, to captivity he goes; if any one kills with the sword, with the sword he must be killed. Here is the perseverance and the faith of the saints."
Literally from beginning to end, the Bible teaches that capital punishment is authorized and required by God. If so, then why do so many people claim to oppose this practice on religious grounds?