Ezra 7:13

I make a decree
Which, according to the laws of the Medes and Persians, when signed, might not be changed, ( Daniel 6:8 ) ,

that all they of the people of Israel, and of his priests and Levites,
in my realm;
who remained there, and took not the benefit of the edict of Cyrus, which gave them leave to go; but neglecting the opportunity, it seems as if they could not now go out of the realm without a fresh grant, which is hereby given:

which are minded of their own freewill to go up to Jerusalem, go with
thee;
this decree did not oblige them to go whether they would or not; for they might, notwithstanding this, continue if they pleased; it only gave them leave to make use of the present opportunity of going along with Ezra, if they chose it.