My take on it is that when we die, we all go to heaven. Once there, the ones that believed on the Lord are placed on one side of the gulf. The ones that denied the Lord are on the other side of the gulf, in torment for having rejected the Lord. During the Millennium reign of Christ, the truth will be taught to all that were mislead and deceived. At the end of the millennium will come the White Throne Judgment and those that reject the Lord will be rejected by him into eternal damnation.