Shemos 3:13

וַיֹּ֨אמֶר מֹשֶׁ֜ה אֶל־הָֽאֱ-לֹהִ֗ים הִנֵּ֨ה אָנֹכִ֣י בָא֮ אֶל־בְּנֵ֣י יִשְׂרָאֵל֒ וְאָמַרְתִּ֣י לָהֶ֔ם אֱלֹהֵ֥י אֲבוֹתֵיכֶ֖ם שְׁלָחַ֣נִי אֲלֵיכֶ֑ם וְאָֽמְרוּ־לִ֣י מַה־שְּׁמ֔וֹ מָ֥ה אֹמַ֖ר אֲלֵהֶֽם

“And Moshe said etc. to me: what is His name? What shall I say to them?”

See the Baal HaTurim ¹[And they shall say to me,] “What is His name?” What… > The final letters of these words [form] the Four-Letter Name (the Tetragrammaton)—which God transmitted to him. And it is written afterward, “Go and gather the elders of Israel,” because [this Name] is only transmitted to the elders of the generation., who notes that the final letters of the words “to me: what is His name? What” spell out the Name of God, blessed be He. (Specifically, the last letter of “to me” provides the Yud, and the last letters of the following three words provide the Heh, Vav, and Heh.)

And it can be said that the initial letters of the words “to me what is His name? What” have a Gematria of 410. This is an allusion to the First Holy Temple which stood for 410 years, and they mentioned the explicit name of Hashem within it.

This was not the case in the Second Temple, as the Sages of blessed memory said (Tractate Yoma 39b²Without the presence of Shimon HaTzaddik among them, the Jewish people were no longer worthy of the many miracles that had occurred during his lifetime. For this reason, following his death, his brethren, the priests, refrained from blessing the Jewish people with the explicit name of God in the priestly blessing.)