Our God also is a consuming fire. And if we, by love, become transformed into Him and burn as He burns, His fire will be our everlasting joy. But if we refuse His love and remain in the coldness of sin and opposition to Him and to other men then His fire (by our own choice rather than His) becomes our everlasting enemy and Love, instead of being our joy, will become our torment and destruction.
When we love God's will we find Him and own His joy in all things.
Merton, Thomas, New Seeds of Contemplation. New York: New Directions, 1961, p.124