You’ve managed to ignore other possibilities. JESUS IS God with us. He has every sovereign right to select a devil, unsaved, never saved, to be in the company. Try not to limit GOD.
1 Co 10:21 You cannot drink the cup of the Lord and the cup of demons; you cannot be partakers of the Lord’s table and of a table of demons.
1 Ti 4:1 But the Spirit expressly says that in the latter times some shall depart from the faith, giving heed to seducing spirits and teachings of demons,