Ezra 3:6

3:6 From the first day of the seventh month they began to offer burnt offerings to the Lord. However, the Lord’s temple was not at that time established.

Ezra 8:15

The Exiles Travel to Jerusalem

8:15 I had them assemble at the canal that flows toward Ahava, and we camped there for three days. I observed that the people and the priests were present, but I found no Levites there.

Ezra 10:8

10:8 Everyone who did not come within three days would thereby forfeit all his property, in keeping with the counsel of the officials and the elders. Furthermore, he himself would be excluded from the assembly of the exiles.