If ye know these things, happy are ye if ye do them. — John xiii. 17.
“...Now, doubtless, many of us think we know this very well. It seems a very trite thing to say, that it is nothing to know what is right, unless we do it; an old subject about which nothing new can be said. When we read such passages in Scripture, we pass over them as admitting them without dispute; and thus we contrive practically to forget them. Knowledge is nothing compared with doing; but the knowing that knowledge is nothing, we make to be something, we make it count, and thus we cheat ourselves.
This we do in parallel cases also. Many a man instead of learning humility in practice, confesses himself a poor sinner, and next prides himself upon the confession; he ascribes the glory of his redemption to God, and then becomes in a manner proud that he is redeemed. He is proud of his so-called humility.
Doubtless Christ spoke no words in vain. The Eternal Wisdom of God did not utter His voice that we might at once catch up His words in an irreverent manner, think we understand them at a glance, and pass them over. But His word endureth for ever; it has a depth of meaning suited to all times and places, and hardly and painfully to be understood in any. They, who think they enter into it easily, may be quite sure they do not enter into it at all.”
~John Henry Newman