To our human understanding, we are inclined to believe that the harder we work, the more successful we’ll be. Apart from God, this makes sense. However, the Sabbath shows our dependence and trust in God, and that only through His empowering will our work and efforts be successful.
“Moreover, I gave them my Sabbaths, as a sign between me and them, that they might know that I am the Lord who sanctifies them.”
“Unless the Lord builds the house, those who build it labor in vain. Unless the Lord watches over the city, the watchman stays awake in vain. It is in vain that you rise up early and go late to rest, eating the bread of anxious toil; for he gives to his beloved sleep.”