Hatred in Christian preaching is often portrayed as a destructive force that corrupts the heart and relationships, undermining love and forgiveness. It is depicted as a habitual sin that can spread beyond its original target, contrary to Christ's command to love our neighbors and even our enemies (Matthew 5:44). Illustrations frequently use imagery of poison or fire to convey hatred's consuming and damaging nature.
Hating enemies breeds a harmful habit that can affect friends and others.
If you hate your enemies, you will contract such a vicious habit of mind as by degrees will break out upon those who are your friends, or those who are indifferent to you. Plutarch.