Those in the first resurrection have completed their fallen sinful nature test with in their life: whether it was in accordance to obeying the law (old testament), or by faith in the life death and resurrection of Jesus these will not be in jepardy of the second death, the second death people are destined for the Lake of fire forever no escape or salvation or reprieve. Those tempted after the 1000 year reign are those natural people like unto us that endured survival of the tribulation these include the Jewish nation along with a undetermined amount of gentiles, the Jewish nation Jesus comes to rescue at Armegedon, these natural people populate the earth, we those in the first resurrection have resurrected bodies we will rule with Christ ruling over them ministering to them, by our power and postions as we learned by faith while we lived in natural bodies as we are now here on earth as received from Christ then and there. Christ Jesus sets up His ruling government and is present on the renovated earth for the 1000 years we are His ambassadors, we execute His laws, animal anomosity is removed sacrafices and the celebrations of the Jewish covenant are observed all natural people will be required to offer to the Lord yearly at the temple as in Ezekiel. close to or shortly after the 1000 years satan is loosed, goes out to decieve natural people, gathers them at Jerusalem and is met with fire from heaven which comsumes them then sends them to the lake of fire. No, it is not possible for those who finished their test of faith and were faithfully found in the first resurrection to lose their inheritace with Jesus and the Father in their and our kingdom. One more point satan is not loosed on the New Earth but yes at the end of the 1000 year earth. After his(satans) departure into the lake of fire God makes the eternal ages New Earth.
