20 Then every island fled away, and the mountains were not found.
Revelation 16:20 Cross References - TKJU
Isaiah 2:14-17
14 and on all the high mountains, and on all the hills that are lifted up,
15 and on every high tower, and on every fenced wall,
16 and on all the ships of Tarshish, and on all pleasant pictures.
17 And the loftiness of man shall be bowed down, and the haughtiness of men shall be made low: And the LORD alone shall be exalted in that day.
Jeremiah 4:23-25
Revelation 6:14
14 And the heaven departed as a scroll when it is rolled together; and every mountain and island were moved out of their places.
Revelation 20:11
11 And I saw a great white throne, and Him that sat on it, from whose face the earth and the heaven fled away; and there was found no place for them.