"The tent was full, and about two hundred persons stood outside the canvas, unable to find room inside. I spoke from the words of Christ in answer to the question of the learned scribe as to which was the great commandment in the law: “Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind.” Matthew 22:37 . The blessing of God rested upon me, and my pain and feebleness left me. Before me were a people whom I might not meet again until the judgment; and the desire for their salvation led me to speak earnestly and in the fear of God, that I might be free from their blood. Great freedom attended my effort, which occupied one hour and ten minutes. Jesus was my helper, and His name shall have all the glory. The audience was very attentive. 4T 281.1"
"Jesus said unto him, Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind."
Ellen White directly references Matthew 22:37 in this passage.