Isaiah 66:23-24

And it shall come to pass, {that} from one new moon to another, and from one sabbath to another, shall all flesh come to worship before me, saith the LORD. {from one new...: Heb. from new moon to his new moon, and from sabbath to his sabbath} And they shall go forth, and look upon the carcases of the men that have transgressed against me: for their worm shall not die, neither shall their fire be quenched; and they shall be an abhorring unto all flesh.