Matthew Poole and continuators on 2 Chronicles 31:3

3 He appointed also the kings portion of his substance, for the burnt-offerings , to wit, for the morning and evening burnt-offerings, and the burntofferings of the sabbaths, and for the new moons, and for the set feasts, as it is written in the law of the LORD.

Which had hitherto been and were to be taken out of the Treasures of the Temple which were collected from the People, 1 Chron. 26. 20. Nehem. 10. 32, 33. but that he might ease them in their present Poverty, which his Predecessor had brought upon them, and engage them to a more chearful attendance upon Gods Service, he took the Burden upon himself.

Marginal references: Numb. 28. & 29.