"Parents and teachers take the responsibility of training these children, yet how few of them realize their duty before God to become acquainted with the physical organism, that they may know how to preserve the life and health of those who are placed in their charge. Thousands of children die because of the ignorance of those who care for them. CE 183.1"
"My people are destroyed for lack of knowledge: because thou hast rejected knowledge, I will also reject thee, that thou shalt be no priest to me: seeing thou hast forgotten the law of thy God, I will also forget thy children."
Both passages connect a lack of knowledge with negative consequences, specifically the destruction or death of children. While Hosea 4:6 is broader, EGW applies the principle to parental knowledge of health.
"until the physical strength was sufficient to support mental efforts. Small children should be as free as lambs to run out-of-doors. They should be allowed the most favorable opportunity to lay the foundation for a sound constitution. CE 183.2"
"Train up a child in the way he should go: and when he is old, he will not depart from it."
While Proverbs 22:6 is about moral training, EGW's statement about children's physical freedom aligns with the principle of nurturing a child's development in the way they should go, in this case, physically. It's an application of the broader principle to physical health.
Youth who are kept in school, and confined to close study, cannot have sound health. Mental effort without corresponding physical exercise, calls an undue proportion of blood to the brain, and thus the circulation is unbalanced. The brain has too much blood, while the extremities have too little. The hours of study and recreation should be carefully regulated, and a portion of the time should be spent in physical labor. When the habits of students in eating and drinking, dressing and sleeping are in accordance with physical law, they can obtain an education without sacrificing health. The lesson must be often repeated, and pressed home to the conscience, that education will be of little value if there is no physical strength to use it after it is gained. CE 183.3 Students should not be permitted to take so many studies that they will have no time for physical training. The health cannot be preserved unless some portion of each day is given to muscular exertion in the open air. Stated h…
"What? know ye not that your body is the temple of the Holy Ghost which is in you, which ye have of God, and ye are not your own? For ye are bought with a price: therefore glorify God in your body, and in your spirit, which are God’s."
The EGW passage emphasizes caring for the body through balanced activity, connecting to the principle of glorifying God in your body as the temple of the Holy Spirit.