Ezra 6:19
“And the children of the captivity kept the passover upon the fourteenth day of the first month.”
And offered at the dedication of this house of God an hundred bullocks, two hundred rams, four hundred lambs; and for a sin offering for all Israel, twelve he goats, according to the number of the tribes of Israel.
And they set the priests in their divisions, and the Levites in their courses, for the service of God, which is at Jerusalem; as it is written in the book of Moses.
And the children of the captivity kept the passover upon the fourteenth day of the first month.
For the priests and the Levites were purified together, all of them were pure, and killed the passover for all the children of the captivity, and for their brethren the priests, and for themselves.
And the children of Israel, which were come again out of captivity, and all such as had separated themselves unto them from the filthiness of the heathen of the land, to seek the Lord God of Israel, did eat,
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Cross-References
“Let the children of Israel also keep the passover at his appointed season.”
“Moreover Josiah kept a passover unto the Lord in Jerusalem: and they killed the passover on the fourteenth day of the first month.”
“Now when the adversaries of Judah and Benjamin heard that the children of the captivity builded the temple unto the Lord God of Israel;”
“And ye shall keep it up until the fourteenth day of the same month: and the whole assembly of the congregation of Israel shall kill it in the evening.”
“And the children of Israel encamped in Gilgal, and kept the passover on the fourteenth day of the month at even in the plains of Jericho.”