We can desire peace in our hearts. Sadly, the world is at war. The world is always at war. In our individual lives, each individual makes a choice between war and peace. Every day, every minute we choose war or peace.
Some people continually choose turmoil and upset.
However, they may not realize they make this choice between peace and turmoil. Some people do actively choose turmoil. Life comes at us. Life piles up on us, and we get into turmoil. However, what Jesus is saying is, we have a choice.