This strange and matured understanding of Joseph, I believe, is the reason we don't see him demonstrate even an iota of bitterness towards his brothers when he had every opportunity to. He cried because he had missed them. He longed to see them again. He helped them and their families. But we never see Joseph even rebuking his brothers for their act or hating them in a moment of weakness. This is too unnatural of a man. I believe the secret is what Joseph reveals in Genesis 50:20 - the understanding that God was working even through the evil intents and acts for greater purposes.

Joseph's understanding shifted from what humans had done against him to what God had done through them. And so, Joseph didn't see himself as the person who should be forgiving others for their role in the grand plan of God. Joseph saw God as the In-Charge. If God's in charge and was in control, who am I to dwell on your wrongdoings as if they had any power to thwart God's plans? It was all working for my good. I don't know what God thinks about you, but I'm too small to be the one you have offended or the one who should free you. Joseph does not say with pride that he forgives his brothers as though he had any other choice.