The parashah This week's is called Bamidbar, "In the desert," and begins the book of the same name, in Spanish, the Book of Numbers. It is called this because it contains several censuses of the Jewish people.
The general idea of a census is to count individuals. In the case of the Torah, censuses were carried out (in this case). parashah) two censuses: the first of the men of the tribes between 20 and 60 years old and the one of the Leviim, Men between one month and fifty years old. In the first case, these were men ready to serve in the army being assembled to conquer the Land of Canaan, while in the second case, they were men who were going to work (or begin preparing to work) in the Mishkan, helping the Kohanim in their daily tasks.
Our sages ask, "Why does God command Moses to count the Jewish people?" Obviously, He knows the number of Jews... Rashi explains in his commentary on the Torah that it is because of God's profound love for the Jewish people that He counts them on many occasions. The way He shows His love for the Jewish people is by counting them.
We will understand a deeper explanation through a concept halakhic - legal: davar sheBeMinián eino batelAn accounting item is not cancelled. This concept applies to the product mix, for example, one cashier and one doesn't cashier. When the element does not cashier It falls into the category of "something accountable," which means the entire mixture is prohibited for consumption and, in some cases, even for profit, such as selling the mixture. The reason for this is that a product is considered "accountable" due to its importance. Therefore, anything mixed with it acquires that status. For example, an egg from an animal that is not cashier that mixes with any amount of eggs cashier, The entire mixture is prohibited, because eggs are sold individually.
The Jewish people are davar sheBeMinián, That is to say, it is something "countable," since God commands it to be counted (and several times over!). This generates a strength in the Jewish people that, by mixing with other peoples, prevents it from being annihilated. In other words: the Jewish people have lived in exile for more than two thousand years. During all that time, they have spread throughout the earth, living in different places and cultures, necessarily mixing with the people of the places where they live. However, this does not mean that they "annihilate" themselves, that is, that they cease to exist and identify as Jewish, since "something countable is not annihilated": the very act of counting the Jewish people is their strength to avoid being annihilated within other peoples.
And, in reality, both explanations are the same: God's love for the Jewish people gives them the strength not to get lost among the other nations of the world, preserving their identity, idiosyncrasies, traditions, their past, present and future as God's people.