Our tendency to sin must never deter us from striving to be more like Christ. Christ calls all of his disciples to excel, to rise above mediocrity, and to mature in every area, becoming like him. Those who strive to become perfect will one day be perfect, even as Christ is perfect (1 John 3: 2-3).
NLT Life Application Study Bible, Second Edition. Tyndale House Publishers, Inc., Study Notes on Mathew 5:48