When we look at the world, it is possible to think that God is not in control. The Jewish people likely felt that way when the Babylonians destroyed the Temple. As the Bible tells us, after 70 years of exile, thousands of Jews returned to Jerusalem and recommitted themselves to God. Many of these events are detailed in the books of Ezra and Nehemiah. This may have also been the time that Psalm 93 was written.
James L. Hutton 