Revelation 20:7

And when the thousand years are finished, Satan shall be loosed out of his prison,

Shall be loosed ... We agree with those commentators who believe that the divine goal of redemption will be fully achieved, but that very near the end, faith shall practically vanish from the earth. "When the Son of man cometh, shall he find faith on the earth?" (Luke 18:8). Just as the old Israel fell away from God and officially and finally rejected even the Messiah himself, their apostasy will be fulfilled in the great antitype of the church, the new Israel, which will apparently do exactly the same thing. "When the final judgment is at hand, the powers of evil will again assemble and gather force."[42] The loosing of Satan will occur at the time when more and more people have chosen wickedness and the true faith shall virtually have disappeared. With the relative number of the righteous greatly diminished, Satan's powers over people will be vastly multiplied; and it appears from this that very near the end of time Satan will find himself with almost a free hand to work his will. If this should be the case, the situation would almost certainly issue in the destruction of humanity. It could be that, in this final outburst of evil, God will permit the human race to find out through terminal experience just what serving the devil really means. See the somewhat lengthy discussion of this in "The Mystery of Redemption," pp. 121-143, "When the final judgment is nigh, the power of evil will gather force again."[43]

[42] Frank L. Cox, op. cit., p. 116.

[43] J. R. Dummelow, op. cit., p. 1089.