The Sabbath Command in Deuteronomy

Six days you shall labour and do all your work. But the seventh day is a sabbath to away your god. On it, not you, nor your son or daughter, nor your male or female servant, nor your ox, nor your donkey,. Any foreigner residing in your town so that your male and female servants may rest as you do. There are two changes to the sabbath command in deuteronomy. First, notice that the first word is changed from remember the sabbat to what? Observe the sabbith. In hebrew, the word is shamar, and it means to keep, to watch over, to guard. And here it's translated