The power of a chaburah, group, transcends the feelings of enmity one might harbor towards another person. We are all in this together. We must stick together as brothers, as Moshe Rabbeinu and Aharon HaKohen. David Ha'Melech and Yehonasan comprise the paradigm of a loving relationship between two friends. Yehonasan was prepared to give up the monarchy for his friend, David.
Envy destroys relationships.
It destroys people and families. Rabbi Akiva had tweny-four thousand students who perished because they did not demonstrate the proper kavod, honor, towards one another. They certainly did not hate each other. Perhaps a little envy had festered, precluding them from giving to one another the appropriate recognition that each one deserved. They were one group who had come from all over the country to study under the greatest sage of the generation.