In the invisible world surrounding us the demons of sin, death, and the devil will prowl around like a pack of dogs seeking to attack the soul and bring us down, actually to devour and destroy the joy of life in God. When we experience trouble and distress we can recognize the event as an enemy attack from the Spiritual Foe.
It is good, right and salutary to turn to my Strength, Refuge and Defense in the day of trouble. It is fitting and proper and necessary to ask the Lord in his mercy and lovingkindness to rise up and attack the attackers, to send them reeling back to hell, to silence their lying mouths, and consume them in wrath.
The mercies of God and the Blood of Jesus Christ is a sure Defense and a dependable Offense. An imprecatory prayer is useful and powerful when directed against spiritual enemies (not physical persons). God will hear those prayers and deliver us from Evil. Sin is more destructive than we are able to imagine, but the Love of God is even far more destructive than we can ever ask or imagine. Use it; pray it; believe it.