English Basic Explanation - Chapter 93
Psalm 93, which is familiar to us from the Friday and Shabbat prayer services, foresees the time when God's kingship will be universally acknowledged. Only when this occurs, when all people on earth wholeheartedly subject themselves to God's authority, can we be assured that "Tikon Tevel Bal Timot" (verse 1) – the earth will run peacefully and securely, without the chaos and devastation that the world has unfortunately witnessed in nearly every generation.
In verse 3 the Psalmist likens the arrogance and violence of the wicked men of the earth to the raging waters of rivers that push forward with force and vengeance, as though nothing could stand in their way. God, however, as verse 4 declares, is far mightier than even the fiercest tides, and thus ultimately even the most arrogant criminals will bow their heads in deference to divine authority. This chapter concludes with an affirmation of the promises of the prophets, who foresaw the reconstruction of the Bet Ha'mikdash in all its glory. Though many generations have come and gone without seeing the fulfillment of these prophecies, we nevertheless remain confident in their eventual realization.
This chapter is read as the "Shir Shel Yom" each Friday, because, as the Gemara explains (Rosh Hashanah 31b), it speaks of God as King over the earth, a stature He first assumed on the sixth and final day of creation, when the creation process was completed. The time foreseen in this Psalm, when all people on earth will come to the recognition of the Almighty as the single divine authority over the world, will resemble the day when the earth was completed and Adam and Hava were first created. On that day, they could not but acknowledge God as Creator, and as the Being who brought them into existence. In the Messianic age this belief will be clear and obvious to all mankind, just as it was to Adam and Hava on the day of their creation.