Psalm 97:6, "The heavens declare his righteousness. All the peoples have seen his glory," is a powerful statement about God's character and his visible manifestation in the world. Here's a breakdown of its meaning:

"The heavens declare his righteousness": This phrase suggests that the very structure and order of the universe, and perhaps celestial events, bear witness to God's justice, moral perfection, and right way of doing things. Some interpretations suggest that the heavens literally proclaim God's character, while others understand it as a metaphorical declaration. In essence, the heavens are evidence that God's way is right.

"All the peoples have seen his glory": This implies that God's magnificent presence and power have been displayed in such a way that they are visible, or understandable, to people everywhere. Glory is the outward demonstration of God's inner character. His glory isn't hidden but is revealed in ways that humanity can perceive, whether through his creation, his acts of deliverance, or his presence in the world.

Taken together, the verse proclaims that God's righteousness is not hidden but is demonstrated to all creation, and that his glory is not reserved for a select few but is made manifest to all peoples. It's a statement about the universality of God's revelation.