Why would God allow Satan/Antichrist to reign for 42 months?

Shalom, Friends, I hope all is well. Revelation 13:5(NKJV) “And there was given unto him a mouth speaking great things and blasphemies, and power was given unto him to continue forty and two months.”

Why would God allow Satan/Antichrist to reign for 42 months?

There is a scale of good and bad, light and darkness on the earth. The more wicked people become, not repenting, or indulging in their sins the darker the world gets. The darkness will push the light out, and when this occurs Satan will reign for a short while. Darkness feeds Satan and their demons, they become very powerful. Before darkness takes over God will take out His faithful bride, the rest will have to fight, and God’s holy spirit will be with people that came to Christ during the reign of Satan, but most believers will be killed as the Antichrist despises Christians, He hates them. The Antichrist will do everything in His power to take out any light left in this world, anyone that doesn't agree with his plans will be hunted down and destroyed. His Kingdom will have advanced technology, everything will be digital. God will allow the darkness to take over because the inhabitants of earth chose this route, they rejected the Son Jesus Christ and loved the father of lies Satan more. Seek God for understanding, have an eye-opening day and God loves you!