Yitzchak's blessing to Yaakov

When Yitzchak is about to die, he wants to bless his children before he dies. Yaakov tricks his father into thinking that he is Eisav, and by doing so Yaakov receives both of his father's blessings. THe blessing that is meant for EIsav is that G-d should give him agricultural success, other nations will serve you, and that he will be stronger than other nations. Those that curse him will be cursed, and those that bless him will be blessed.

Yaakov then receives another blessing that G-d should bless him ( Yitzchak can't give him this), he should be fruitful and multiply, they will be a large nation, and they will get the blessing of Avraham and the land that was given to Avraham (zerah and aretz).