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 use of this prophecy by the Apostle Peter shows that it referred to Christ?
What command did the Lord later give to Abraham?
What does God desire to teach the children?
By what are all men proved guilty?
For how long a time was the seventh-day Sabbath observed in the Christian church?
Did they observe it after His resurrection?
Why did God give His only begotten Son to the world?

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