Tenno is the "Head of the Shinto", Shinto is "ONE LORD", Chapter 6, verse 4 of the fifth Book of Moses: Called Deuteronomy.

Deut is the short form for Deuteronomy, which is the short form for The Fifth Book of Moses: Called Deuteronomy.

Deuteronomy 6:4 Hear, O Is-rae-l: The LORD our God is one LORD:
            
Osorosi is, "Great and Terrible"; "Great Terror".
 
Deuteronomy 10:21 He is thy praise, and he is thy God, that hath done for thee these great and terrible things, which thine eyes have seen.
            
Deuteronomy 34:12 And in all that mighty hand, and in all the great terror which Moses shewed in the sight of all Israel.