“Does Satan have to get God’s permission to attack Christians?”
You know how this goes: “I’ve got some good news and I’ve got some bad news. Which do you want first?”
Good News and Bad News
Let’s go with the good. God certainly offers a significant level of protection to those who serve him. Satan complained that God had “put a hedge” around Job and his household, preventing Satan from changing Job’s circumstances or revoking the blessings God had given him. Likewise, the Lord Jesus informed Peter that Satan had demanded to sift the disciples like wheat. That sure sounds like an attack to me … but an attack Satan could not have initiated unilaterally.