תּלמוד אויף שמות 3:14

These are the names of God that may not be erased once written: “Adonai” (my Lord), “Yud He Vav He” (the tetragrammaton), “Shaddai”, “Tzevo’ot” (Hosts), “I will Be What I Will Be”. Rabbi Yossi says “Tzevo’ot” is also used as a non-divine name.

These are the [Divine] Names that are not erased when written - Alef-Lamed (El), Alef-Dalet (Adonai), Yod-Hei (Yah), Shaddai, Tz'vaot, Ehyeh-Asher-Ehyeh. Rabbi Yossi says, "Tz'vaot" is not sacred. Said Rabbi Shimon ben Elazar about the guild houses,, They would write in Jerusalem and they would erase 'Tz'vaot,' for they had a tradition that it was laic, as it is written (Deuteronomy 20:9) "And the commanders of the armies [tz'vaot] will command at the head of the nation."

Ten times did the High Priest pronounce the Name on the Day of Atonement¹⁷⁹Babli 39b.: Six times with the bull¹⁸⁰3 times with the bull confessing his sins the first time; 3 times with the bull confessing the sins of the Cohanim., and three with the he-goat, and once with the lots¹⁸¹Mishnah 4:1.. Those near were falling on their faces, those farther away were saying “Praised be the glory of His Kingdom forever and ever”. These and those did not move away from there before they forgot it. This is My Name forever¹⁸²Ex. 3:14., “this is My Name to conceal.¹⁸³Babli Pesaḥim 50a.” In earlier times he was saying it aloud. Since the lawless increased, he said it softly. Rebbi Tarphon said, I was standing in a row with my brothers the Cohanim and turned my ear towards the High Priest, when I heard him mixing it with the song of the Cohanim¹⁸⁴They sang “Praised be the glory of His Kingdom forever and ever” not after he had pronounced the name but immediately when he started pronouncing it.. In earlier times it was given to everybody. Since the lawless increased, it was given only to qualified ones.