The Ineffable Name
The
Ineffable Name of G-d, which at this time of history is too holy to be
pronounced as it is spelled:
Yud-Heh-Vav-Heh, is
actually made up of two parts, Yud-Heh
and Vav-Heh.
The unified Name represents periods of history when G-d’s Presence is revealed
and known, and the divided Name represents periods of time when G-d’s Presence
is hidden. This is why the prophet said of the Days of Mashiach: