'Troubles' in the Bible

I have knowledge of your troubles and how poor you are (but you have true wealth), and the evil words of those who say they are Jews, and are not, but are a Synagogue of Satan.

The first Trouble is past: see, there are still two Troubles to come.

And a voice from heaven came to my ears, saying, Put in writing, There is a blessing on the dead who from now on come to their end in the Lord: yes, says the Spirit, that they may have rest from their troubles; for their works go with them.

For this reason in one day will her troubles come, death and sorrow and need of food; and she will be completely burned with fire; for strong is the Lord God who is her judge.