“All our disquieting fears arise from our ignorance of God and mistakes concerning him.” Matthew Henry Commentary. There it is in a nutshell, the reason we have fear! It’s true that in our minds, we don’t give God the power He deserves. Part of my daily praise includes the words: “Worthy are you, our Lord and God, to receive glory and honor and power.” From this verse it sounds like we are the ones who give Him power, which is not true, He’s certainly not powerless without us, but we need to be confident in Him. If we give into our fear, and let anxiety overtake us, we are ignorant of who He is. I’m in God’s word every day, and I still don’t take to heart who He is, and sometimes become consumed with fear of what man can do to me, when I should be more concerned with what God can do to the unholy one who is causing me the anxiety! Let go of your fear of man, and be confident in God!
"So we can confidently say, “The Lord is my helper; I will not fear; what can man do to me?” Hebrews 13:6