[Raptor]

The idea of "1,000" year discipline for believers is in other circles called "Kingdom exclusion." Many Bible teachers have taught this with a solid Biblical basis. It does not refer to the loss of salvation, neither "not getting into heaven." It specifically views the Kingdom as the particular Kingdom of the Heavens the Lord Jesus willl establish on earth at His second coming. It will last 1,000 years, so it is also referred to as the Millenial Kingdom. After that, there will be eternity with a new heaven and a new earth.

The first person to teach kingdom exclusion was the apostle Paul as seen for example here:

Or do you not know that the unrighteous ones will not inherit the kingdom of God? Do not be deceived: neither the sexually immoral, nor idolaters, nor adulterers, nor effeminate, nor homosexuals, 10nor thieves, nor coveters, not drunkards, nor verbal abusers, nor swindlers, will inherit the kingdom of God. 1 Cor. 6:9-11.

For of this you can be sure: No immoral, impure, or greedy person (that is, an idolater), has any inheritance in the kingdom of Christ and of God. Ephesians 5:5.