My question regards Satan’s release after his chaining in Revelation 20:2. Does the Bible say how long it takes before he is thrown into the lake of fire? How long does it take to persuade people to rise up against The Lord ? It seems hard to think that after years of peace people would not be happy. Will people still be born with free will even after the final war?
The Bible doesn’t say how much time will be required to accomplish Satan’s final defeat, only that it will happen after the 1,000 years are over. It simply says he will be released, deceive the nations again, and gather a large army which will be destroyed by fire from Heaven. Then he will be thrown into the lake of fire and brimstone to be tormented forever (Rev. 20:7-10).
If by the final war, you mean the battle of Armageddon at the end of the Great Tribulation, then the answer is yes. The people born on Earth during the Millennium will have free will, and they will also have a sin nature. Scholars speculate that as the 1,000 years pass more and more of those being born will reject the Lord. In many respects, it will be a repeat of Old Testament times when the people rebelled even with God dwelling in their midst. It’s impossible for sinful man to live in a manner pleasing to God, and sooner or later he will rebel.