Psalm 99 presents a majestic vision of God’s holiness as He reigns over all the earth. In this sermon titled “Holy is He,” Dr. James W. Ptak unpacks the psalm’s threefold call to exalt and worship the Lord for His justice, mercy, and righteousness. Drawing from the lives of Moses, Aaron, and Samuel, the message shows how God remains both just and merciful in His dealings with His people. This sermon invites listeners to reflect deeply on what it means to worship a holy God with reverence and joy.