What is the second month?
Rashi: It is Iyar.
Did they stand up all the Leviyim?
Rashi: No, only the singers, to sing in front of the builders when they made the foundation.
Malbim: Yes.
What is the meaning of "Lenatze'ach" here and in the coming verse?
Rashi: Both are Shirah 1 , like "la'Menatze'ach bi'Nginos Mizmor l'David."
Ibn Ezra #1: It is to strengthen, like "va'Yaz Nitzcham."
Ibn Ezra #2: This is from Netzach (to make eternal).
Malbim (8-9): Here it is to sing, so it is all the Leviyim 2 . In verse 9, it is to oversee those who do the work.
The coming verse includes Bnei Yehudah. Only Leviyim may sing! Perhaps that is only at the time of Avodah. Or, here was a Hora'as Sha'ah. (PF)
If a gatekeeper sang, he transgresses a Lav, and some say that he is Chayav Misah [bi'Ydei Shamayim - Erchin 11b]! Perhaps that is only at the time of Avodah. Or, here was a Hora'as Sha'ah. (PF)
