"the branch is united to the vine. “I am the Vine,” said Christ; “ye are the branches.” The closest possible connection is here represented. Engraft the leafless twig upon the flourishing vine stock, and it becomes a living branch, drawing sap and nourishment from the vine. Fiber by fiber, vein by vein, the sapling clings, until it buds and blossoms and bears fruit. The sapless twig represents the sinner. When united to Christ, soul is joined to soul, the feeble and finite to the holy and infinite, and man becomes one with Christ. 5T 591.1"
"I am the vine, ye are the branches: He that abideth in me, and I in him, the same bringeth forth much fruit: for without me ye can do nothing."
EGW directly quotes and elaborates on the vine and branches analogy from John 15:5.
"“Without Me,” says Christ, “ye can do nothing.” Are we who claim to be workers with Christ, united to Him? Do we abide in Christ? and are we one with Him? The message that we bear is world wide. It must come before all nations, tongues, and peoples. The Lord will not require any one of us to go forth with this message without giving us grace and power to present it to the people in a manner corresponding to its importance. The great question with us today is: Are we carrying to the world this solemn message of truth in a way to show its importance? The Lord will work with the laborers if they will make Christ their only dependence. He never designed that His missionaries should work without His grace, destitute of His power. 5T 591.2"
"I am the vine, ye are the branches: He that abideth in me, and I in him, the same bringeth forth much fruit: for without me ye can do nothing."
EGW directly quotes and applies John 15:5.