Christians have killed more non-believers than any other religion. Me thinks you need a history lesson. You should look up the crusades.
2 Chronicles 15:12-13 ESV
And they entered into a covenant to seek the Lord, the God of their fathers, with all their heart and with all their soul, but that whoever would not seek the Lord, the God of Israel, should be put to death, whether young or old, man or woman.
That’s pretty clear right?
It’s pretty common in the religions of Abraham (Judaism, Christian, and Islam) to promote the death of non-believers. Modern interpretations of these passages tend to lean towards more of a “spiritual death” or use this more as a metaphor versus actually stoning nonbelievers.
Alan