Revenge and malice are forbidden as well as hatred, and the negative precepts culminate in the positive law. Thou shalt love thy neighbour as thyself, which sums up in itself one half of the Decalogue (Matthew 22:40).
"For he that loveth another hath fulfilled the Law. For this, Thou shalt not commit adultery, Thou shalt not kill, Thou shalt not steal, Thou shalt not bear false witness, Thou shalt not covet; and if there be any other commandment, it is briefly comprehended in this saying, namely, Thou shalt love thy neighbour as thyself.
Love worketh no ill to his neighbour: therefore love is the fulfilling of the Law" (Romans 13:8-10).