MacLaren on Christ’s Teaching
Christ’s ‘originality’ as a moral teacher lies not so much in the absolute novelty of His commandments, as in the perspective in which He sets them, and in the motives on which He bases them, and most of all in His being more than a teacher, namely, the Giver of power to fulfil what He enjoins. Christian ethics not merely recognises the duty of love to men, but sets it as the foundation of all other duties. It is root and trunk, all others are but the branches into which it ramifies.
—Alexander Maclaren, Expositions of Holy Scripture (Heritage Educational Systems, 2008), Matt 5:43.