Esias 66:23

23 And it shall come to pass from month to month, and from sabbath to sabbath, all flesh shall come to worship before me in Jerusalem, saith the Lord.

Esias 66:23 In-Context

21 And I will take of them priests and Levites, saith the Lord.
22 For as the new heaven and the new earth, which I make, remain before me, saith the Lord, so shall your seed and your name continue.
23 And it shall come to pass from month to month, and from sabbath to sabbath, all flesh shall come to worship before me in Jerusalem, saith the Lord.
24 And they shall go forth, and see the carcasses of the men that have transgressed against me: for their worm shall not die, and their fire shall not be quenched; and they shall be a spectacle to all flesh.

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