How do we know that God's attributes are perfect?

The Bible reveals God's attributes as perfections through various passages, particularly in Exodus 34:6-7, where He describes Himself as merciful, gracious, long-suffering, and abounding in goodness and truth. These attributes are not merely characteristics but define His nature. In the context of Psalm 150, the repeated call to praise reflects a deep understanding of these attributes, recognizing God as the one who performs mighty acts for His people and governs the universe in perfect wisdom and righteousness.