7 For the hidden power of lawlessness is already at work. However, the one who holds him back will do so until he is taken out of the way
The spirit of lawlessness [Satan’s influence] is working in the world [gaining momentum] to sway the people away from God’s Word to an anti-God mentality as we are witnessing today in schools, governments, and homes.
“the one who holds him back” The only one who is capable to hold back pure evil [the antichrist] is the Spirit of God. Once He moves out of the way, it will allow for Satan through the antichrist to start his rule on earth [the beginning of the Great Tribulation].