The new command is simple enough for a toddler to memorize and appreciate, profound enough that the most mature believers are repeatedly embarrassed at how poorly they comprehend it and put it into practice: Love one another. As I have loved you, so you must love one another…The more we recognize the depth of our own sin, the more we recognize the love of the Savior; the more we appreciate the love of the Savior, the higher his standard appears; the higher his standard appears, the more we recognize in our selfishness, our innate self-centeredness, the depth of our own sin. With a standard like this, no thoughtful believer can ever say, this side of the parousia, ‘I am perfectly keeping the basic stipulation of the new covenant. -D. A. Carson, PNTC