Any discussion of the redemption from Egypt, and the leadership of Moshe Rabbeinu and Aharon Hakohen, must discuss the unique relationship between these two brother.
This particular brotherly relationship was very special. Here you had a situation where the younger brother surpassed his older brother in greatness and fame. Yet, Aharon did not show the slightest bit of jealousy at his little brother’s achievements. There was no sibling rivalry.
The Rabbis go even further in discussing this relationship. They use the words, כאיש אחד בלב אחד, like one man of one heart.
Usually, the Sages do not go into too much detail about the more personal interaction between two biblical characters.
In this case, Moshe and Aharon became role models for future Jewish families. No jealousy within the family. Stay united and wish each other well. Learn to be genuinely happy at a family member’s success. Feel their pain when they are down and try to lift them up.
Aharon and Moshe had such a relationship of brotherly love. It is definitely something we all need to emulate.