What does 2 Chronicles 31:2 mean?

Now when all this was finished, all Israel who were present went out to the cities of Judah, and broke the pillars in pieces, cut down the Asherah poles, and broke down the high places and the altars out of all Judah and Benjamin, also in Ephraim and Manasseh, until they had destroyed them all. Then all the children of Israel returned, every man to his possession, into their own cities.

He also appointed the king’s portion of his possessions for the burnt offerings, for the morning and evening burnt offerings, and the burnt offerings for the Sabbaths, for the new moons, and for the set feasts, as it is written in Yahweh’s law.

Moreover he commanded the people who lived in Jerusalem to give the portion of the priests and the Levites, that they might give themselves to Yahweh’s law.

As soon as the commandment went out, the children of Israel gave in abundance the first fruits of grain, new wine, oil, honey, and of all the increase of the field; and they brought in the tithe of all things abundantly.