Jesus said that a whopping big tree could be moved with just a little faith. Is that just pie in the sky?
Underestimate the Devil
“Be sober, be vigilant; because your adversary the devil walks about like a roaring lion, seeking whom he may devour.” (1 Peter 5.8)
“And the Lord said to Satan, ‘From where do you come?’
So Satan answered the Lord and said, ‘From going to and fro on the earth, and from walking back and forth on it.’” (Job 1.7)