To whom does the "seed" in these promises refer?

Answer

"Now to Abraham and his seed were the promises made. He saith not, And to seeds, as of many; but as of
one, And to thy seed, which is Christ." Gal. 3: 16.

What is the only unpardonable sin?
How futile was all this?
What promise is thus fulfilled?
What did Babylon give to the nations to drink?
Why will many not be prepared for this event?
Concerning what did Christ tell us not to marvel?
How long do the other class wait after the first resurrection before they are raised?

Questions & Answers are from the book Bible Readings for the Home Circle