Divrey Hayamim Bais 35:15

15 And the meshorarim (singers), the Bnei Asaph, were in their place, according to the mitzvat Dovid, and Asaph, and Heman, and Yedutun, Chozeh HaMelech; and the sho’arim (gatekeepers) were at every sha’ar; neither did they need to depart from their Avodah, for their achim the Levi’im prepared for them.

Divrey Hayamim Bais 35:15 Meaning and Commentary

2 Chronicles 35:15

And the singers the sons of Asaph were in their place
In the court of the priests, singing and playing on their instruments while the sacrifices were offering:

according to the commandment of David, and Asaph, and Heman, and
Jeduthun the king's seer;
the same with Ethan; and everyone were seers, as Jarchi interprets it, that is, the three last:

and the porters waited at every gate;
such of the Levites as were in, that post and office:

they might not depart from their service;
to let people in and out, that came for their passover lamb, and share in their other offerings:

for their brethren the Levites prepared for them;
because they were not at leisure to prepare for themselves.

Divrey Hayamim Bais 35:15 In-Context

13 And they roasted the Pesach with eish according to the mishpat; but the other kadashim they boiled in pots, and in caldrons, and in pans, and distributed them in haste among kol Bnei HaAm.

14 And afterward they made ready for themselves, and for the Kohanim; because the Kohanim the Bnei Aharon were busied in offering olah and the chalavim (fats) until lailah; therefore the Levi’im prepared for themselves, and for the Kohanim, the Bnei Aharon.

15 And the meshorarim (singers), the Bnei Asaph, were in their place, according to the mitzvat Dovid, and Asaph, and Heman, and Yedutun, Chozeh HaMelech; and the sho’arim (gatekeepers) were at every sha’ar; neither did they need to depart from their Avodah, for their achim the Levi’im prepared for them.

16 So all the Avodas Hashem was prepared that same day, to keep the Pesach, and to offer olot upon the Mizbe’ach Hashem, according to the mitzvat HaMelech Yoshiyahu.

17 And the Bnei Yisroel that were present kept the Pesach at that time, and the Chag HaMatzot seven days.