"In your seed all the nations of the earth shall be blessed, because you have obeyed My voice...Now the promises were spoken to Abraham and to his seed...that is, Christ..."(Genesis 22:18; Galatians 3:16)
Because Abraham and Christ Jesus believed God He has promised them that “all nations of the earth shall be blessed”. It is because of Abraham's obedience, not ours, that blessing comes to ALL! Further, it is because of "Jesus Christ's faith" that the blessing is "given". Again, blessing is a done deal because of Abraham's obedience and Jesus Christ's faith.
Humanity does not become aware that they are "blessed" until we “believe”. And, there is coming a time when ALL will believe God for...
ALL will be made alive in Christ Jesus just as ALL die in Adam. Faith in this truth is given and understood by only a few people in this life. Most people will not bow and confess until their resurrection and appearing before Christ Jesus at the great white throne. Then all will believe and "shall be saved".