In my reading, God rested on the seventh day and got back to work on the eighth day of creation, forming Adam, making this the second week of creation, which will make Christ's millenium reign God's second day of rest.
New Heavens and a New Earth
“See, I will create
new heavens and a new earth.
The former things will not be remembered,
nor will they come to mind.
But be glad and rejoice forever
in what I will create,
for I will create Jerusalem to be a delight
and its people a joy.