Bereishit: Why the world is built and preserved with 7 and 28

The very first verse of the Torah – “Bereishit barah Elokim et hashamayim v’et haaretz,” – “In the beginning, God created the heavens and the earth,” contains seven words and 28 letters. (Bereishit 1:1.) Quite remarkably the opening verse of the ten commandments, “Vayedaber Elokim et kol hadevarim haeileh leimor,” …