You already know what is holding this wicked one back until it is time for him to come.
From heaven God shows how angry he is with all the wicked and evil things that sinful people do to crush the truth.
But don't be fooled! People will rebel against God. Then before the Lord returns, the wicked one who is doomed to be destroyed will appear.
His mysterious power is already at work, but someone is holding him back. And the wicked one won't appear until that someone is out of the way.
Then he will appear, but the Lord Jesus will kill him simply by breathing on him. He will be completely destroyed by the Lord's glorious return.