"As the branch must abide in the vine to obtain the vital sap which causes it to flourish, so those who love God and keep all His sayings must abide in His love. Without Christ we cannot subdue a single sin or overcome the smallest temptation. Many need the Spirit of Christ and His power to enlighten their understanding, as much as blind Bartimaeus needed his natural sight. “As the branch cannot bear fruit of itself, except it abide in the vine; no more can ye, except ye abide in Me.” All who are really in Christ will experience the benefit of this union. The Father accepts them in the Beloved, and they become objects of His solicitude and tender, loving care. This connection with Christ will result in the purification of the heart and in a circumspect life and faultless character. The fruit borne upon the Christian tree is “love, joy, peace, long-suffering, gentleness, goodness, faith, meekness, temperance.” 4T 355.1"
"Abide in me, and I in you. As the branch cannot bear fruit of itself, except it abide in the vine; no more can ye, except ye abide in me."
EGW directly quotes John 15:4 and builds upon the concept of abiding in Christ as the vine, emphasizing the necessity of this connection for spiritual growth and fruit-bearing.