The first promise of salvation is found in Genesis 3:22-24, and applies to the entire Adamic race. Romans chapter 5 corroborates that interpretation. The children of Israel were the means by which Yahweh chose to execute His will in the world, but even Christ informed us that other Adamic tribes would be in the resurrection.
Hebrews 12:17 wrote:For ye know how that afterward, when he would have inherited the blessing, he was rejected: for he found no place of repentance, though he sought it carefully with tears.
Esau was repentant, but he was rejected "when he would have inherited the blessing" (Genesis 27). Repentance is a change of mind and purpose. Having no legitimate offspring when the blessing was given, he certainly realized his sin (Genesis 28:8-9) but it was too late for Esau to change his purpose.
Esau was used by Yahweh as an example of the consequences of race-mixing. However the churches have ignored the example, and today there are millions like Esau as a result.
Prophetically, the name
Esau usually refers collectively to the bastard offspring, rather than to the individual himself. None of them are truly of Adam, but are the bastard "vessels of destruction" Paul mentions in his illustration of the people of Judaea in Romans chapter 9.
Paul in Romans 5 explained that as in one man, meaning Adam, all men were subject to death, that likewise in one man, meaning Christ, all would be made alive. He was explaining the very result of the promise made to the entire race in Genesis 3:22-24!
Therefore we cannot even discount Esau from "all", since he too is a child of Adam.