Death reminds us that we are creatures. Yet as fearsome as death is, it is nothing compared with meeting a holy God. When we encounter him, the totality of our creatureliness breaks upon us and shatters the myth that we have believed about ourselves, the myth that we are demigods, junior-grade deities who will try to live forever.
This ethical holiness of God may be defined as that perfection of God, in virtue of which He eternally wills and maintains His own moral excellence, abhors sin, and demands purity in his moral creatures.Systematic Theology, 74