"We should ever look upon the youth as the purchase of the blood of Christ. As such they have demands upon our love, our patience, our sympathy. If we would follow Jesus we cannot restrict our interest and affection to ourselves and our own families; we cannot give our time and attention to temporal matters and forget the eternal interests of those around us.... “Love one another, as I have loved you” ( John 15:12 ), is the command of Jesus. Look at His self-denial; behold the manner of love He has bestowed upon us; and then seek to imitate the Pattern.— Testimonies for the Church 5:21-35 ; read in College Hall, December, 1881. CT 97.1"
"This is my commandment, That ye love one another, as I have loved you."
Ellen White directly references John 15:12 in this passage.