In other words dont be afraid when scary or bad circumstances pop out from no where
Sudden fear comes in many forms, like, losing your job, family sickness, no money for rent, threats, or even your own character being challenged.
The LORD reminds you! DONT BE AFRAID!! I have this under control. It may not look like it, but my hands are very well involved. If I can part the red sea, I can help in your situation as well.
But now is the time to get on your face and cry out to HIM.