When one is 'born again' they lose their desire for weaponry. They lose their desire to kill animals and humans who have never harmed them nor ever would.
The Old Testament is extremely accurate when it described the children of the New Covenant 'beating their swords into plowshears'.
Acts 10
12 It contained all kinds of four-footed animals, as well as reptiles and birds. 13 Then a voice told him, “Get up, Peter. Kill and eat.”
14 “Surely not, Lord!” Peter replied. “I have never eaten anything impure or unclean.”
15 The voice spoke to him a second time, “Do not call anything impure that God has made clean.”
Acts 11:5 “I was in the city of Joppa praying, and in a trance I saw a vision. I saw something like a large sheet being let down from heaven by its four corners, and it came down to where I was. 6 I looked into it and saw four-footed animals of the earth, wild beasts, reptiles and birds. 7 Then I heard a voice telling me, ‘Get up, Peter. Kill and eat.’
8 “I replied, ‘Surely not, Lord! Nothing impure or unclean has ever entered my mouth.’
9 “The voice spoke from heaven a second time, ‘Do not call anything impure that God has made clean.’
Old Testament reference refers to the 2nd coming and after. This is true in that context:
Isaiah 65:25
The wolf and the lamb will feed together, and the lion will eat straw like the ox, and dust will be the serpent’s food. They will neither harm nor destroy on all my holy mountain,” says the Lord.