23 From one New Moon to another and from one Sabbath to another, all mankind will come and bow down before me,” says the LORD.

Read Isaiah 66:23 Using Other Translations

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 new moon to new moon, and from Sabbath to Sabbath, all flesh shall come to worship before me, declares the LORD.
“All humanity will come to worship me from week to week and from month to month.