Rabbi Yishmael and Rabbi Elazar ben Azariah were teaching in the same academy — and during the set times of communal prayer, they deliberately did not pray in the same way. One would stand to recite a particular blessing while the other sat. One would bow at a certain line while the other held himself upright. Two giants of the generation, standing side by side, using their postures to differ.
This was not sloppiness. It was not disagreement about the correct halakhah. Both men knew perfectly well what the other was doing, and each had a legitimate tradition behind his practice. They staged the difference on purpose.
The reason, preserved as exemplum no. 233 in Moses Gaster's 1924 The Exempla of the Rabbis, was pedagogical. They did not want their students to flatten into a single uniform practice out of nothing more than herd instinct. If both rabbis prayed identically, the next generation would copy that single form without ever asking why they prayed that way. By visibly differing, they forced each student to choose — to study the sources, weigh the traditions, and settle which ancestor's practice he meant to inherit. They made obedience into an act of judgment.
The teaching runs against the grain of most religious cultures, which tend to reward uniformity and punish variation. The Rabbis took the opposite view. The Tiferet Yisrael, writing much later on the same idea, put it this way: "If every Jew prayed in exactly the same way, Heaven would receive one prayer. When each Jew prays in his own way, Heaven receives thousands." Yishmael and Elazar were planting the roots of that idea in the body language of prayer itself. Pray like your rebbe. But know which rebbe you are praying like, and why.