The word Sabbath simply means "rest" and reading Ex 20 we could read it as "remember the day of rest and keep it holy." Jesus fulfilled the Sabbath in that in Him we find our rest as He said in: Mat 11:28 Come to me, all who labor and are heavy laden, and I will give you rest. 29 Take my yoke upon you, and learn from me, for I am gentle and lowly in heart, and you will find rest for your souls. So while the principle of the Sabbath is physical rest, and we still should find time to physically rest, the more important rest is that of our souls and ceasing from our own works to try and please God. Rather, resting in Him gives us that freedom to simply trust in Him and find our true rest we so long for.