Look at the nations and watch—and be utterly amazed. For I am going to do something in your days that you would not believe, even if you were told. I am raising up the Babylonians, that ruthless and impetuous people, who sweep across the whole earth to seize dwelling places not their own. Habakkuk 1:5-6
This is God's response to Habakkuk's complaint. God was raising up a very specific group of people who were feared and hated among God's people. Think about that. It was almost as if God were saying, “Yes, Habakkuk, you see evil now but wait until the Babylonians come to town. You ain't seen nothing yet. AND I'm raising them up to do just that!”
The longer I'm a Christian, the more puzzled I become at some of the things God allows to happen. Of course there are the indescribable atrocities occurring in foreign lands (mass rape, genocide, children being used as sex slaves), but we don't have to go far to see what God allows. We too shake our heads and question the rightness of it all.
But this was God’s point to Habakkuk. Of course Habakkuk wasn't in control of events around him. God was. As the world seemingly spins out of control, God still is in control. He knows what He's doing. We need to be reminded of that often.