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§ The mishna teaches concerning the consecration of an addition to the city of Jerusalem or the Temple courtyard: And with a song. The Sages taught in a baraita: They sang the song of thanksgiving, i.e., Psalms, chapter 100, which begins:
“A psalm of thanksgiving,” accompanied by harps, lyres, and cymbals, at every corner and upon every large stone in Jerusalem. And they also recited Psalms, chapter 30, which begins:
“I will extol You, O Lord, for You have lifted me up,” and the song of evil spirits, i.e., Psalms, chapter 91, which begins: “He that dwells in the secret place of the Most High.” And some say that this psalm is called the song of plagues.
It is related that Rabbi Yehoshua ben Levi would recite these verses to protect him from evil spirits during the night and fall asleep while saying them. The Gemara asks: How could he do that? But doesn’t Rabbi Yehoshua ben Levi himself say: One is prohibited from healing himself with words of Torah? The Gemara answers: To protect oneself is different, as he recited these verses only to protect himself from evil spirits, and not to heal himself.
We explore music and instruments used in the Beis Hamikdash.