Fear's Enemy

Sanibel Island

"Blessed is the one who trusts in the LORD, whose confidence is in Him. They will be like a tree planted by the water that sends out its roots by the stream. It does not fear when heat comes; its leaves are always green. It has no worries in a year of drought and never fails to bear fruit." (Jeremiah 17:7-8)

Riddle:

I am fear's enemy, a weapon of mass destruction. I totally annihilate fear, utterly destroy it. Every time. I have the ability to product perfect peace.Who am I?

(The answer may be found in Jeremiah 17:7-8, Isaiah 26:3, and Psalm 56:3.)