תהלים, פרק קל״ח, פסוק ה׳

In the future, the leaders of the world's nations will experience a profound shift in what they choose to celebrate. They will turn their attention toward God's supreme providence and actions, changing the very focus of their songs and praise. The primary approach among commentators is that these future songs will be joyous expressions of praise for God's leadership, His character traits, and His active guidance of the world [מאירי]. Instead of their usual secular music, the kings will abandon songs about physical desire, mockery, or war. Their music will be entirely dedicated to recounting the deeds of God [אבן עזרא, מצודת דוד].

The reason for this outpouring of song is the immense glory of God, which fills the entire world and makes it entirely fitting to sing about His ways [שטיינזלץ, מצודת דוד]. Human understanding of God is naturally limited to witnessing His actions. Therefore, it is only by observing how He guides the world that people can truly grasp the greatness of His glory [אלשיך]. This glory is an essential part of God's nature. It is not lessened when He pays attention to the humble and lowly of the world. In fact, His greatness is most clearly revealed precisely through His care for the lowest levels of creation [מלבי״ם].

This vision of kings recognizing God's greatness through His actions already has roots in the historical era of King David. When foreign nations witnessed David's extraordinary success, they realized that it was God who had granted him the kingdom, recognizing that God alone holds the power to humble a person or raise them up. Because of this realization, foreign rulers, such as Hiram the king of Tyre, offered thanks to God out of deep awe. They acknowledged Him as the Master of everything and the Creator of heaven and earth [רד״ק].