How do we know that God's testimonies are wonderful?

In Psalm 119, the psalmist expresses how the testimonies of God are wonderful, leading him to keep them with his soul. These testimonies reveal God's pure, holy, and righteous nature, and in light of this, we see our own sinfulness and need for redemption. The grace extended through Christ—who fulfills all righteousness on behalf of His elect—is central to the wonder of God's testimonies. This understanding fosters humility and dependence on God's mercy, highlighting the beauty of His perfect plan for salvation.