What does Genesis 2:2 mean?

As the previous verse made clear, God completed His work of creation on the sixth day. The week was not over, however. The seventh day mattered to God and became the most important of all of the days of the week. Having completed His work, God rested. This is the point where the pattern of chapter 1 is halted. On each of the six creation days, God did specific work and saw that it was good. On the seventh day, He did no work.

What does it mean for God to rest? What does it mean to "rest" from working, for one with the power to create worlds out of nothing with just His command? It's hard to know, but the passage is clear that it was significant to God. Whether for practical, symbolic, or other purposes, we are meant to see this as a meaningful choice on the part of the Creator. This day of rest will become known as the Sabbath, a central point of God's Law and essential to Israel's worship of Him. But even now, before sin enters into the world, before the Law exists, this day of rest is already meaningful to the Creator.