Go back up and read verse 13.
Verse 14 happens AFTER verse 13.
We do not get a chance to repent until AFTER we suffer the calamities.
The Colonists believed they were suffering the tyranny of the king and parliament because of our national sins and in the 1760s the pulpits were aflame with fiery sermons about repentance.
You cannot even get the churches today to discuss repentance because they say they are rich and have everything they need in Jesus.
Oh?
I think folks can repent at any time they choose.