That night; either,
1. In the night following this message of the prophet to Hezekiah; or,
2. In that famous night when God destroyed the Assyrians, it was done in this manner. For such expressions are oft used of an indefinite and uncertain time, as that day is frequently taken, as Isaiah 4:1, Isaiah 26:1 27:1, &c. Smote in the camp, with pestilence, or some other sudden and mortal stroke. The camp of the Assyrians; either before Libnah, or in some other place near Jerusalem, where they were encamped.