Isaiah 33:18-19

There will be no fear there of enemy officials who noted things down, weighed things out, and assessed Israel’s strength by taking inventories. Neither will there be terror caused by invading armies that used incomprehensible speech (cf. Isaiah 28:11; Isaiah 28:19). Foreign tax collectors who spoke an alien language may also be in view. These were all fears that the Judeans had when the Assyrians invaded.