“And when the thousand years are expired, Satan shall be loosed out of his prison,”
King James Version (KJV)
Matthew Henry's Concise Commentary
20:7-10 While this world lasts, Satan's power in it will not be wholly destroyed, though it may be limited and lessened. No sooner is Satan let loose, than he again begins deceiving the nations, and stirring them up to make war with the saints and servants of God. It would be well if the servants and ministers of Christ were as active and persevering in doing good, as his enemies in doing mischief. God will fight this last and decisive battle for his people, that the victory may be complete, and the glory be to himself.
“Let no man deceive you with vain words: for because of these things cometh the wrath of God upon the children of disobedience.”