Chasidut su Salmi 33:15

The Talmud in Rosh Hashanah 18A states: "Rav Naḥman bar Yitzḥak said: We, too, learn this in the Baraita: The verse states: “He who fashions their hearts alike, who considers all their deeds” (Psalms 33:15). What is this verse saying? If we say this is what it is saying: That He created everyone and unites all their hearts together, there is a difficulty since don’t we see that it is not so, as the hearts of people are not united and are not similar to one another? Rather, is this not what it is saying: The Creator sees their hearts together and considers all their deeds with a single scan." The original assumption of the Talmud is that there can only be one way of all people to have this level of unity, and that is through seeing their hearts (see above) through which he can place light in their hearts, as we see that the Jewish people all camped as one before Mount Sinai.