The Scriptures regarding the keeping of the Sabbath are pointed to.
And here is a sampling of some additional comments on the subject by Ellen White:
Parents, above every thing, take care of your children upon the Sabbath. Do not suffer them to violate God's holy day by playing in the house or out of doors. You may just as well break the Sabbath yourselves as to let your children do it, and when you suffer your children to wander about, and suffer them to play upon the Sabbath, God looks upon you as Sabbath-breakers. Your children, that are under your control, should be made to mind you. Your word should be their law. Will not parents wake up to their duty before it shall be too late, and take hold of the work in earnest, redeem the time, and make unsparing efforts to save their children? {RH, September 19, 1854 par. 10}
Many need instruction as to how they should appear in the assembly for worship on the Sabbath. They are not to enter the presence of God in the common clothing worn during the week. All should have a special Sabbath suit, to be worn when attending service in God's house. While we should not conform to worldly fashions, we are not to be indifferent in regard to our outward appearance. We are to be neat and trim, though without adornment. The children of God should be pure within and without. {6T 355.2}
On Friday let the preparation for the Sabbath be completed. See that all the clothing is in readiness and that all the cooking is done. Let the boots be blacked and the baths be taken. It is possible to do this. If you make it a rule you can do it. The Sabbath is not to be given to the repairing of garments, to the cooking of food, to pleasure seeking, or to any other worldly employment. Before the setting of the sun let all secular work be laid aside and all secular papers be put out of sight. Parents, explain your work and its purpose to your children, and let them share in your preparation to keep the Sabbath according to the commandment. {6T 355.3}
Let not the precious hours of the Sabbath be wasted in bed. On Sabbath morning the family should be astir early. If they rise late, there is confusion and bustle in preparing for breakfast and Sabbath school. There is hurrying, jostling, and impatience. Thus unholy feelings come into the home. The Sabbath, thus desecrated, becomes a weariness, and its coming is dreaded rather than loved. {6T 357.1}
We should not provide for the Sabbath a more liberal supply or a greater variety of food than for other days. Instead of this the food should be more simple, and less should be eaten, in order that the mind may be clear and vigorous to comprehend spiritual things. Overeating befogs the brain. The most precious words may be heard and not appreciated, because the mind is confused by an improper diet. By overeating on the Sabbath, many have done more than they think to dishonor God. {6T 357.2}
While cooking upon the Sabbath should be avoided, it is not necessary to eat cold food. In cold weather let the food prepared the day before be heated. And let the meals, though simple, be palatable and attractive. Provide something that will be regarded as a treat, something the family do not have every day. {6T 357.3}
The Sabbath school and the meeting for worship occupy only a part of the Sabbath. The portion remaining to the family may be made the most sacred and precious season of all the Sabbath hours. Much of this time parents should spend with their children. In many families the younger children are left to themselves to find entertainment as best they can. Left alone, the children soon be come restless and begin to play or engage in some kind of mischief. Thus the Sabbath has to them no sacred significance. {6T 358.1}