Let love be without dissimulation. Abhor that which is evil; hold to that which is good.
Let me illustrate this very simply. Here is a knife with a richly-carved ivory handle, a knife of excellent workmanship. Yonder woman, we will suppose, has had a dear child murdered by a cruel enemy. This knife is hers, she is pleased with it, and prizes it much. How can I make her throw that knife away? I can do it easily, for that is the knife with which her child was killed. Look at it; there is blood still upon the handle. She drops it as though it were a scorpion; she cannot bear it. "Put it away," saith she, "it killed my child! Oh, hateful thing!"
(C. H. Spurgeon.)
Parallel VersesKJV: Let love be without dissimulation. Abhor that which is evil; cleave to that which is good.
WEB: Let love be without hypocrisy. Abhor that which is evil. Cling to that which is good.