Know this: our protestations and manifestations of our love for them are as burning coals on their head.
Romans 12:20
On the contrary, "If your enemy is hungry, feed him; if he is thirsty, give him a drink. For in so doing, you will heap burning coals on his head."
Well and good.
And when your enemy is waging war on you and actively trying to destroy you, does the Bible say it’s okay to put a knife in their belly?
That is not a snide or sarcastic retort it is a sincere question.