Although God is the most powerful, He also need to rest or be rest so that we us Human created by God will Know and Learn the importance of the seventh day in our daily living...
I think He rested on the Seventh Day as an example to people to observe the Sabbath , for us to rest from daily labors, to worship , and to spend time with family. Besides , if I created something as awesome as this planet and all on it , I would like a day to sit back and admire the beauty of it all.
You could argue that the day of rest came first, and then the Creation story (from Babylon probably, though some of the story is from Israel) came along to sanctify the Sabbath.
According to Genesis, he rested. Here's a better question: Why would an all powerful, eternal and infinite entity need to rest?
According to the seventh day rest principle, God rested on the seventh day.
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On the seventh day God rested.
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God rested on the seventh day to set an example for humans to take time to rest and reflect on their work and to acknowledge the completion of creation.
According to the belief that God rested on the seventh day, God rested on Saturday.
They are pretty much identical except that in the Islamic version the Creation ends after six days. God does not rest on the seventh day, because God would not need to rest.
It is God who told us to worship on the sabbath. He created the universe in 6 days and rested on the seventh day. This seventh day is called the sabbath. He did not rest because he was tired but as an example of what we need to do.
In the Christian perception of God, he should never need to rest, thus making the seventh day an anachronism. However, the Jews wanted to know why they were required to hold the seventh day to be a day of rest. One version of the Ten Commandments says that God commanded the Israelites to respect the sabbath day because that was the day on which God rested.
== And on the seventh day God ended his work which he had made; and he rested on the seventh day from all his work which he had made. And God blessed the seventh day, and sanctified it: because that in it he had rested from all his work which God created and made.View the discussion page for the remaining answers
It is a commandment in the Bible for Jews to rest on the seventh day, for it took God seven days to create the world and He too rested on the seventh day.