Knowing what Joseph is thinking and saying, the brothers decide to get rid of him. The first-born, Reuben, and the fourth-born, Judah, step in to stop the murder. Instead, they sell Joseph as a slave to some traveling Ishmaelites (hear the echo of the rivalry between Isaac and Ishmael?).
Coincidentally, or providentially, Joseph's dream will come true. Read Psalm 105:16-22.
When he summoned famine against the land, and broke every staff of bread,
17he had sent a man ahead of them, Joseph, who was sold as a slave.
18His feet were hurt with fetters, his neck was put in a collar of iron;
19until what he had said came to pass, the word of the Lord kept testing him.
20The king sent and released him; the ruler of the peoples set him free.
21He made him lord of his house, and ruler of all his possessions,
22to instruct his officials at his pleasure, and to teach his elders wisdom.