Ezra 3:3-6

Even though the people were afraid of the local residents, they rebuilt the altar at its old site. Then they began to sacrifice burnt offerings on the altar to the LORD each morning and evening. They celebrated the Festival of Shelters as prescribed in the Law, sacrificing the number of burnt offerings specified for each day of the festival. They also offered the regular burnt offerings and the offerings required for the new moon celebrations and the annual festivals as prescribed by the LORD. The people also gave voluntary offerings to the LORD. Fifteen days before the Festival of Shelters began, the priests had begun to sacrifice burnt offerings to the LORD. This was even before they had started to lay the foundation of the LORD’s Temple.