Tomorrow is the Lord’s Day, on which we observe the Sabbath. God made the world, then rested. So the Jews were commanded to keep that Sabbath rest by working for six days and then resting on the seventh. They worked and then rested, for they were looking forward to the coming rest the Christ would bring.
Christ rose on the eighth day, remaking the world in doing so, and then set about establishing His Kingdom through the expansion of the church through all the world. So we, in imitation of that, rest and then work. We rest in order to work, because our sins are forgiven. What else would we want to do than, out of gratitude, do good works to glorify our Father. So, children, on this Lord’s Day, rest like champions, in order to go back to the glorious work God gives you to do.