en_tn/luk/21/25.md

The nations will be in distress

Here "the nations" refers to the people in them. Alternate translation: "The people of the nations will be distressed"

distress, anxious because of the roar of the sea and waves

"distress because they will be anxious about the roar of the sea and its waves" or "distress, and the loud noise of the sea and its rough movements will frighten them." This seems to refer to unusual storms or disasters involving the seas.