Galatians

Urges believers to stand firm in the freedom Christ has given and not return to the law for salvation. ... click to read full summary of this book.

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.

The promise was given to Abraham and his single descendant. It doesn't refer to many descendants, but specifically to one - Christ.

* Work in progress - there may be occasional inaccuracies