Riddle

I never was, am always to be. No one ever saw me, nor ever will.

Choose an answer

A.Yesterday
B.Air
C.God
D.Tomorrow / Future
Hint: It's a 2-word phrase with 14 letters, starting with "T".

Answer

Tomorrow / Future

Why this is the answer

Tomorrow is always in the future; when it arrives, it is called 'today.'

This riddle is filed under Riddles for Adults and rated Medium.