2Ch 2 Chronicles, chapter Second Book of Chronicles, chapter 8
He did that to obey the rules about what sacrifices Moses had declared should be made. These included sacrifices for every day and for the Sabbath days and to celebrate each day on which there was a new moon and for the three other festivals that were celebrated each year. Those festivals were the Festival of Eating Unleavened Bread, the Harvest Festival, and the Festival of Living in Temporary Shelters.