It is sometimes good to see things in ages.
The first age was 2,000 years of chaos.
The second was 2,000 years of law. (This was the age of the Jew.)
The third was 2,000 years of the Messiah. (This could be called the age of the Gentile.)
The fourth is 1,000 years of Sabbath, or peace.
The fifth is the resurrection of Israel. The dry bones come together to have their day with Gog and Magog. (Ezekiel 37)
In Revelation 19 we have the harvest of the wheat. The wheat goes to be with the Lord, and the tares are all burnt up. The dead in Christ, and those living in Christ are all resurrected. There is no living being on the earth for a thousand years. At the end of the thousand years there is a resurrection. No length of time is determined for this age. It is the Jews day when God will fulfill all his promises to them.