Creation is threefold: Heaven, earth, sea.
Alternatively, creation is sixfold, because each zone has things in it: Heaven and things, earth and things, sea and things (Revelation 10:6). A nice symmetry: The sixfold creation was formed over six days.
At the origin and end of the sixfold creation, there has to be an eternal one who creates (Revelation 10:6). Otherwise, this sixfold creation is unfulfilled. It remains forever restless, because six is not seven, six is not Sabbatical.
Absent the Creator, the sixfold world doesn’t form a full scale. Without an Alpha and Omega, the sixfold creation lacks the resolution of an octave.
