'Birthright' in the Bible

And Jacob said, First of all give me your birthright.

And Esau said, Truly, I am at the point of death: what profit is the birthright to me?

And Jacob said, First of all give me your oath; and he gave him his oath, handing over his birthright to Jacob.

Then Jacob gave him bread and soup; and he took food and drink and went away, caring little for his birthright.

And he said, Is it because he is named Jacob that he has twice taken my place? for he took away my birthright, and now he has taken away my blessing. And he said, Have you not kept a blessing for me?

But he is to give his first son his birthright, and twice as great a part of his property: for he is the first-fruits of his strength and the right of the first son is his.

And the sons of Reuben, the oldest son of Israel, (for he was the oldest son, but, because he made his father's bride-bed unclean, his birthright was given to the sons of Joseph, the son of Israel; but he is not to be given the place of the oldest.

Though Judah became stronger than his brothers, and from him came the ruler, the birthright was Joseph's:)