As Sefer Bereishit concludes, Yosef and his brothers finally manage to come to terms with one another. Yehuda is willing to sacrifice himself for a son of Rachel - for Binyamin. Regarding Yosef - the brotherly love overcomes the hate. Finally the two sides come together simultaneously. When Yehuda makes a move toward Yosef, Yosef is unable to withhold himself.
Brotherly love overcomes all the differences.
Once again, unity is created.