Consider this:
Seven letters are written in the Torah with crowns called "tagin" attached to them. These are the letters shin, ayin, tet, nun, zayin, gimmel, and tzadi. Each crown is comprised of three small "zayins" resembling small daggers, and zayin, in turn, has a numerical value of seven, thus implying a connection with Shabbat. Emphasis added.
1 And consider this: 
Note the "Tagin" at each vertex of the tetrahedron. Now, consider how the Nicene Council would kept whatever mystery is behind the Tagin alive in a language that was not Hebrew? A mystery that is in the very letters of the Bible! Perhaps the doctrine of the Trinity?
God only rested on the Seventh Day. He did not quit.