Why is holiness important in understanding God's character?

Holiness is a foundational attribute of God, signifying His complete separation from sin and imperfection. It is essential for understanding not only who God is but also His moral law, which reveals the standard by which all humanity is measured. In the book of Isaiah, we see the angels proclaiming God's holiness, emphasizing that He alone is worthy of reverence. Understanding God's holiness helps us grasp the severity of sin and the profundity of His grace; it is through recognizing His holiness that we can adequately appreciate the gift of salvation through Christ, who fulfills the law and embodies perfect holiness.