Charles H. Spurgeon on Psalms 99:3

Thy terrible name... holy. In acts of man's vindictive justice, there is something of impurity, perturbation, passion, some mixture of cruelty; but none of these fall upon God in the several acts of wrath. When God appears to Ezekiel in the resemblance of fire, to signify his anger against the house of Judah for their idolatry, "from his loins downward there was the appearance of fire, but from the loins upward the appearance of brightness, as the colour of amber." Eze 8:2. His heart is clean in his most terrible acts of vengeance; it is a pure flame wherewith he scorcheth and burns his enemies. He is holy in the most fiery appearance. Stephen Charnock.