“thy hidden ones” in Psalm 83: 3 are Jews from Judea (region south of Jerusalem) who have fled into the wilderness during the second half of the Great Tribulation. The wilderness is the mountainous region of Jordan east of Jerusalem.
Psalm 83 is a request for God’s help. It represents the Judean refugee’s call for defense at the end of the Tribulation. Jesus Christ will come through Jordan defeating the nations that have gathered against the Judean refugees now living in Jordan.