That's what JESUS CHRIST says.

Really?

Have you read the bible?

Of course. In ancient Russian, as I have to, being Orthodox Christian.

No where in the New Testament does it instruct me how to prepare for battle against evildoers.

It's all about exactly that, from the beginning to the end. If you don't get it, may be you read some other Testament?

To successfully fight an enemy you have to stop blindly hate him f.e. Isn't that a wise advise? Did you miss it somehow, reading New Testament?