The offerings of the people very properly came next in order, preparatory to the service. The Lord will be sanctified in all that draw nigh unto him. Leviticus 10:3.
2 Chronicles 35:7-10
7 And Josiah gavea to the people, of the flock, lambs and kids, all for the passover offerings, for all that were present, to the number of thirty thousand, and three thousand bullocks: these were of the king's substance.
8 And his princes gave willinglyb unto the people, to the priests, and to the Levites: Hilkiah and Zechariah and Jehiel, rulers of the house of God, gave unto the priests for the passover offerings two thousand and six hundred small cattle, and three hundred oxen.
9 Conaniah also, and Shemaiah and Nethaneel, his brethren, and Hashabiah and Jeiel and Jozabad, chief of the Levites, gavec unto the Levites for passover offerings five thousand small cattle, and five hundred oxen.
10 So the service was prepared, and the priests stood in their place, and the Levites in their courses, according to the king's commandment.