When disasters like the recent hurricane that hit the state of Texas happens, quite a few religious people start relating these events to the ones that were written in the bible or to scriptures that seem to speak of these types of bad things happening.
Just a few weeks ago, on the 21st of August, there was a total solar eclipse, and then on the 25th of the same month, Hurricane Harvey struck. Then after that, Hurricane Irma started building up. Because of the sequence of these events, someone posted something on Facebook about the numbers 21, 25 and 26 in relation to a biblical scripture or prophecy.
They posted a verse from the book of Luke that talks about natural disasters happening. The exact scripture comes from Luke 21: 25-26. That's why the person felt that it held some significance to the recent natural occurrences and disasters--because of the numbers 21, 25 and 26. Whether those numbers or events have any significance or not remains to be seen.