Aren't 'devils' our ultimate enemy?

from Matthew 5:43-45 (KJV)

ye have heard that it hath been said thou shalt love thy neighbour and hate thine enemy.

but I say unto you love your enemies bless them that curse you do good to them that hate you and pray for them which despitefully use you and persecute you that ye may be the children of your Father which is in heaven for He maketh his sun to rise on the evil and on the good and sendeth rain on the just and on the unjust.

[yes, I purposely leave out the commas and semi-colons and colons and italics men put in, and only leave the punctuation that denotes an END to the statement. as I understand it, that's all the originals had. Out of my own respect for my heavenly Father, I retain the right to capitalize Father]

Want all of the kjv's commas? Please refer to it; it's online...