Each specialist is adept at his specialty because of what he knows. A Christian is to be a specialist in love. That love is to abound in knowledge. An indifferent, vague, sloppy love is not Christian love. It is an informed love.
Love grows best in the radiant light of knowledge.
Discernment, however, is an advance upon knowledge. Discernment is the correct use of the facts. But we must have knowledge to have discernment. The more we know the more we can divide things that differ. We can separate and make distinctions.