How does the example of Cain and Esau apply to people in America today?

Les explains that Esau was immoral and profane, and for one morsel of food—the bowl of bean soup—he sold his birthright, and it did not bother him. Thirty-seven years later, when he would have inherited the blessing or the double portion, he was rejected and found no place of repentance, though he sought it carefully with tears. Les suggests Esau hoped his father would change his mind; he thought his weeping and crying could get Isaac to change his mind, but he would not, because that just was not the custom. Esau was also bewailing that he had missed the birthright and the blessing. Les ties all of Esau’s problems back to the same thing as Cain: Cain had the same opportunity as Abel, but his problem was no faith; he did not see any significance in what God said. So it was with Esau, who saw no significance in spiritual things. Les brings it up to our own day and time, saying that is exactly where so many fellow people right here in America are.