"While Jesus was still teaching the people, His disciples brought the message that His mother and His brothers were without, and desired to see Him. He knew what was in their hearts, and “He answered and said unto him that told Him, Who is My mother? and who are My brethren? And He stretched forth His hand toward His disciples, and said, Behold My mother and My brethren! For whosoever shall do the will of My Father which is in heaven, the same is My brother, and sister, and mother.” DA 325.1"
"But he answered and said unto him that told him, Who is my mother? and who are my brethren? And he stretched forth his hand toward his disciples, and said, Behold my mother and my brethren! For whosoever shall do the will of my Father which is in heaven, the same is my brother, and sister, and mother."
The EGW passage directly quotes and references Matthew 12:48-50.
"All who would receive Christ by faith were united to Him by a tie closer than that of human kinship. They would become one with Him, as He was one with the Father. As a believer and doer of His words, His mother was more nearly and savingly related to Him than through her natural relationship. His brothers would receive no benefit from their connection with Him unless they accepted Him as their personal Saviour. DA 325.2"
"For whosoever shall do the will of my Father which is in heaven, the same is my brother, and sister, and mother."
The EGW passage directly amplifies the principle stated in Matthew 12:50, that spiritual connection through obedience to God's will is a stronger bond than familial ties.
"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 the concept of believers being one with Christ, as Christ is one with the Father. The EGW passage expands on this idea by stating that believers are united to Christ by a tie closer than human kinship, echoing the sentiment of John 17:21.
"What a support Christ would have found in His earthly relatives if they had believed in Him as one from heaven, and had co-operated with Him in doing the work of God! Their unbelief cast a shadow over the earthly life of Jesus. It was a part of the bitterness of that cup of woe which He drained for us. DA 325.3"
"And they were offended in him. But Jesus said unto them, A prophet is not without honour, save in his own country, and in his own house."
Both passages address the rejection and lack of belief Jesus faced from those closest to him, and the pain this caused. The EGW passage expands on the implications of this unbelief.