I have a cold right now. It's not a bad one - just the usual stuffiness in the nose and chest, and the dull ache in the head. Being congested is annoying. It's more annoying, though, feeling the effects of what's going on inside my body. As I fight off this little cold, I feel tired. Weak. My hands are freezing. (In other news, it's really difficult to type 20,000 words when your hands are freezing.)
Physical fragility reminds me of my spiritual fragility. I'm put down by the common cold; how much greater a threat, then, are the spiritual forces of evil? We're "hard pressed on every side" by a cold, a small little virus that renders us weak and irritable; how much more, then, the demonic host? Satan and his minions absolutely despise Christ and all associated with him. C. S. Lewis has among others pointed out their single-minded focus. They want to ruin us.
That's why we pray and rely on the God who is King over colds and demons alike. God can cure our physical ailments. He can also heal our broken souls. He can redeem our calloused hearts. He can wash us of our sins. These are greater threats to our person, even to our physical body, than any sickness or injury we might sustain. Having a cold is annoying; having a rebellious heart is deadly.
Thank God that, to him, saving a sinner is no more difficult than curing a cold. God is the God over all creation, small and large, powerful and weak, magnificent and mediocre. Praise him, for he is worthy of all praise. Hallelujah and amen.