There will be a literal reign of Christ on earth with His saints for 1000 years,and will be the time the kingdom is restored to Israel(Acts 1:6-11;Ezekiel 39:21-29),which all Gentile nations shall collapse,and Israel will be the only operating government in the millennial reign of Christ(Jeremiah 46:27-28).
God will give the world 7 years to have their way,and cause all people that do not love Him to follow the beast kingdom,and bring Israel to the truth that Jesus is their Messiah.
God's purpose is to gather all nations,the heathen,to go against Israel to battle,which is the battle of Armageddon(Zechariah 14;Joel 3;Ezekiel 38,39;Revelation 16:12-16),which God will put them down,and the heathen that are left of the nations that fought against Israel will have to go up year after year to Jerusalem to worship the LORD and keep the feast of tabernacles(Zechariah 14:16;Ezekiel 39:1-8).
The millennial reign of Christ will be a time of peace,people will not war with people,animals and people will not fear each other,animals will not fear each other,and not fight with each other,but be plant eaters,and the animals will be so tame that a child can lead a crocodile in one hand,and a lion in the other,and the animal will have no desire to hurt that child(Isaiah 11).
Nobody will recognize and god,or religious figure,but the whole world will only acknowledge the LORD(Zechariah 14:9;Isaiah 11:9).
After the millennial reign the earth shall be burned up and all the works of it,for it has been tainted with sin,along with the heavens that have been tainted with sin as they melt with fervent heat.
The saints will go to the New Jerusalem,which Jesus told the saints,I go to prepare a place for you,that where I am at you may be also.
There will be a literal 1000 years of Jesus and His saints,in glorified bodies,ruling over some of the people that went against Israel at the battle of Armageddon,and the kingdom will be restored to Israel,and Jesus will rule over Jerusalem sitting on the throne of David.
For those that think we are in the millennium,that does not make sense,for why is Jesus ruling for 1000 years in a spiritual sense,when Jesus has been ruling ever since He ascended to heaven,which He said all power is given to Me in heaven and earth,and how is Jesus ruling when there is still wars,and chaos on earth,and disobedience on earth.
And when has there been 1000 years of peace,where there were no wars,and animals were plant eaters,and did not go against people,and the whole earth only acknowledged the LORD,and the world went to Jerusalem year after year to worship the LORD.
It can only be a literal reign of Christ on earth.