'In that Day' in the Bible

In that day the Lord will take away the finery of the anklets and the headbands and the crescent necklaces,

In that day, Yahweh of hosts will become a garland of glory and a diadem of beauty to the remnant of his people,

Therefore my people shall know my name, therefore in that day, that I [am] the one who speaks. {Here am I}."