New Living Translation
I will personally fight against the people in Jerusalem, that mighty fortress— the people who boast, “No one can touch us here. No one can break in here.”

American Standard Version
Behold, I am against thee, O inhabitant of the valley, and of the rock of the plain, saith Jehovah; you that say, Who shall come down against us? or who shall enter into our habitations?

Berean Study Bible
Behold, I am against you who dwell above the valley, atop the rocky plateau—declares the LORD—you who say, “Who can come against us? Who can enter our dwellings?”

Douay-Rheims Bible
Behold I come to thee that dwelleth in a valley upon a rock above a plain, saith the Lord: and you say: Who shall strike us? and who shall enter into our houses?

English Revised Version
Behold, I am against thee, O inhabitant of the valley, and of the rock of the plain, saith the LORD; ye which say, Who shall come down against us? or who shall enter into our habitations?

King James Bible
Behold, I am against thee, O inhabitant of the valley, and rock of the plain, saith the LORD; which say, Who shall come down against us? or who shall enter into our habitations?

World English Bible
Behold, I am against you, O inhabitant of the valley, [and] of the rock of the plain, says Yahweh; you that say, Who shall come down against us? or who shall enter into our habitations?

Young's Literal Translation
Lo, I am against thee -- an affirmation of Jehovah, O inhabitant of the valley, rock of the plain, Who are saying, Who cometh down against us? And who cometh into our habitations?

Jeremiah 21:13 Additional Translations ...