What is the purpose of the 75 days after the tribulation?

The 75 days after the tribulation serve to prepare the earth for the coming Kingdom economy. They are used to cleanse the earth of all residue from the destroyed Gentile empires and Armageddon, getting everything ready before resurrected Jewish believers enter and Israel receives its Old Testament promises.

Les explains that after Christ returns and crushes the Gentile empires and the Antichrist's armies at Armageddon, the residue becomes like chaff blown away. The stone that smote the image becomes a great mountain filling the whole earth, setting up His Kingdom. Before bringing in the Jewish resurrected believers and fulfilling Israel's Old Testament promises, these 75 days are used to get everything ready for the coming Kingdom economy, cleansing the earth of all residue so it will be beautiful.

Daniel 12:11

And from the time that the daily sacrifice shall be taken away, and the abomination that maketh desolate set up, there shall be a thousand two hundred and ninety days.

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When do the 75 days occur in relation to the resurrection of Jewish believers?

The 75 days occur before the Jewish resurrected believers are brought in. They are used to prepare everything for the coming Kingdom economy and to cleanse the earth of all residue, making it beautiful. This period follows the Second Coming and the destruction of Gentile empires, setting the stage for Israel’s promises.