Luke 21:10
Then Jesus said to His disciples, "Nations will wage war against one another and kingdoms will attack one another.
Mark 13:8
For nations will wage war against one another, and kingdoms will attack one another. And earthquakes will happen at various places [in the world], and there will be famines. These things are [only] the beginning of terrible times.
Hebrews 12:27
Now the words, "once more" indicate the removing of what can be shaken --- that is, the created universe --- so that those things which cannot be shaken will remain. [Note: These "things" have been variously interpreted to be eternal truth, the heavenly kingdom, the new heavens and earth, etc.].
Acts 2:19-20
And I will display miracles in the sky above and [supernatural] signs on the earth below [consisting of] blood, fire and smoky vapor.
Acts 11:28
One of them, a man named Agabus, stood up and indicated by [the direction of] the Holy Spirit that there was going to be a severe worldwide famine, which [actually] took place during the time that Claudius ruled.
Revelation 6:2-12
So, I looked, and before me [stood] a white horse, and the man riding on it had a bow. And he was given a crown, and he rode out as a conqueror [going out] to conquer [someone].