"his mind stayed upon the thought of a divine presence ever beside him, ever looking upon him with pitying love. Bid him think of a Father's heart that ever grieves over sin, of a Father's hand stretched out still, of a Father's voice saying, “Let him take hold of My strength, that he may make peace with Me, and he shall make peace.” Isaiah 27:5 . COL 388.1"
"Or let him take hold of my strength, that he may make peace with me; and he shall make peace with me."
Ellen White directly references Isaiah 27:5 in this passage.
"Upon your faithfulness in this work not only the well-being of others but your own eternal destiny depends. Christ is seeking to uplift all who will be lifted to companionship with Himself, that we may be one with Him as He is one with the Father. He permits us to come in contact with suffering and calamity in order to call us out of our selfishness; He seeks to develop in us the attributes of His character—compassion, tenderness, and love. By accepting this work of ministry we place ourselves in His school, to be fitted for the courts of God. By rejecting it, we reject His instruction, and choose eternal separation from His presence. COL 388.3"
"That they all may be one; as thou, Father, art in me, and I in thee, that they also may be one in us: that the world may believe that thou hast sent me."
Both passages discuss unity with Christ and the Father. EGW expands on the practical implications of striving for this unity through service and character development, echoing the sentiment of John 17:21.