Name known only to Himself
In Revelation 19:12, this symbolically means that what the Word is like in its spiritual and celestial senses, no one sees but the Lord, and the person to whom He reveals it. (Apocalypse Revealed 824)
Hundred and fifty
'A hundred and fifty days,' as mentioned in Genesis 8:3, signifies the term of fluctuation and of a new life. 'A hundred and fifty,' as mentioned in Genesis 7:24, signifies a last and first term. Here, it refers to the last term of the Most Ancient Church.
(Reference: Arcana Coelestia 812)
