"Wherever there are a few Sabbathkeepers, the parents should unite in providing a place for a day school where their children and youth can be instructed. They should employ a Christian teacher who, as a consecrated missionary, shall educate the children in such a way as to lead them to become missionaries. Let teachers be employed who will give a thorough education in the common branches, the Bible being made the foundation and the life of all study. Parents should gird on the armor and by their own example teach their children to be missionaries. They should work while it is day, for “the night cometh, when no man can work.” John 9:4 . If they will put forth unselfish efforts, perseveringly teaching their children to bear responsibilities, the Lord will work with them. 6T 198.2"
"I must work the works of him that sent me, while it is day: the night cometh, when no man can work."
Ellen White directly references John 9:4 in this passage.