Six days you shall labour and do all your work; and the seventh day is a sabbath to Jehovah your God. You shall not do any work - you, nor your son, nor your daughter, nor your sojourner who is within your gates. For in six days Jehovah made heaven and earth, the sea, and all that is in them, and rested on the seventh day; therefore Jehovah blessed the sabbath day, and sanctified it.

From these words it is clear that 'keeping the sabbath holy' means not violating it in any way. But the internal sense of the commandment is that the realities meant by the sabbath must not be violated in any way, those realities being the union of the Lord's Divine Essence with His Human Essence, also the union of His Human with the heavens, and the consequent joining together in them of goodness and truth, 8886. For if these realities are violated by anyone, spiritual life is ruined with that person. It becomes life on the natural level alone and after this on that of the senses, when falsity is seized on instead of truth, and evil instead of good, since these now reign universally with that person.