Ezra 6:21

21 And the children of Israel ate the passover, they that were of the captivity, and every one who separated himself to them from the uncleanness of the nations of the land, to seek the Lord God of Israel.

Ezra 6:21 Meaning and Commentary

Ezra 6:21

And the children of Israel, which were come again out of
captivity
The tribes of Judah and Benjamin, with some of the ten tribes mixed with them:

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;
such of the Gentiles in the dominions of Babylon, and came with the Jews from thence, who were enlightened into the knowledge and worship of the true God, and not only renounced their idolatry, here called filthiness, but were circumcised, and embraced the religion of the Jews, and so were proselytes of righteousness, as they call them; or otherwise they would not have been allowed to eat of the passover, as they did, ( Exodus 12:48 ) .

Ezra 6:21 In-Context

19 And the children of the captivity kept the passover on the fourteenth day of the first month.
20 For the priests and Levites were purified, all were clean to a man, and they slew the passover for all the children of the captivity, and for their brethren the priests, and for themselves.
21 And the children of Israel ate the passover, they that were of the captivity, and every one who separated himself to them from the uncleanness of the nations of the land, to seek the Lord God of Israel.
22 and they kept the feast of unleavened bread seven days with gladness, because the Lord made them glad, and he turned the heart of the king of Assyria to them, to strengthen their hands in the works of the house of the God of Israel.

The Brenton translation of the Septuagint is in the public domain.