The seventh petition in the Lord’s prayer is an appeal to our heavenly father to deliver us from evil.
It reads
“And lead us not into temptation, but deliver us from evil: For thine is the kingdom, and the power, and the glory, forever. Amen” Matthew 6:13
This is an acknowledgment, on our part, that evil plagues us and that we are unable to free ourselves from this evil.
Jeremiah 13:23
Can an Ethiopian change his skin or a leopard its spots? Neither can you do good who are accustomed to doing evil?
Evil
The Greek word from which the word evil comes is “poneros”, and signifies “the wicked one”, as Satan is called. Evil is not just a trait, it is a being, and that being is the Devil. If we read Matthew 13: 19
it states;
“When anyone hears the word of the kingdom and does not understand it, then the wicked one comes and snatches away what was sown in his heart. This is he who received seed by the wayside.”
The same account in Mark 4:15 reads
“And these are the ones by the wayside where the word is sown. When they hear, Satan comes immediately and takes away the word that was sown in their hearts.”
We see that the word ‘wicked’ is replaced by ‘Satan’ in Mark’s narration. The devil is evil and wicked. This is in contrast to how God is identified in the bible.
Mark 10:18
“Why do you call me good?” Jesus answered. “No one is good—except God alone.”
The Psalmist declares of God in Psalm 119:68a
“You are good, and what you do is good…”
This epithet of the devil as wicked and evil comes from the Greek word ponos which means labor, sorrow, misery, and this is because of grudgery which is found in the way of sin. The Bible tells us in James 1:15 that sin when it is conceived leads to death. We cannot deny the evil that sin brings. And sin, of course, has its origin in the devil. The word evil encompasses all actions and persons that hurt or bring sorrow, misery, and pain. In effect, all the actions of the devil and their consequences.
The Bible speaks of evil in different ways: evil works (Jas. 3:16), an evil time (Psalm 37:19), evil hearts (Genesis 8:21), evil ways (2 Kings 17:13), evildoers (1 Peter 2:12), and evil men – 2 Timothy 3:13. However, in trying to understand evil, we can divide it into three categories.

CATEGORIES OF EVIL
1. The evil of sin which has its fountainhead in a polluted heart:
Said Jesus, “For out of the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false witness, blasphemies.” – Matthew 15:19
Paul also enumerates the same sinful pollutions in Gal. 5:19-21. When Jesus describes the heart of a Pharisee in the book of Matthew, he gives a vivid example of this pollution. He talks about being like graves that are polished and sparkling on the outside but inwardly are filled with uncleanliness and dead men’s bones. Sin is evil and finds its way into the deepest recesses of our hearts.
2. The evil which results from sin:
I am sure a lot of us would have thought or asked at one point or the other, Why is our life beset with so many evils — pain, sorrow, disappointment, and finally death? Why must people suffer so much and for so long? Does God place these evils upon men? These are questions that plague many people. At times the righteous suffer more than the people who make no profession at all. Why?
The answer is found in the fact that sin is the root cause of all trouble, deserved or not. Unfortunately, because the devil who is the originator of sin and evil loves to cause misery and pain, we will continue to see these circumstances all around us.
Conclusion
It is also important for us to note that not all situations which we mark as evil is actually evil. A mother may use the rod to discipline her child, but she does it because she loves the child.
For ‘whom the Lord loveth he chasteneth, and scourgeth every son whom he receiveth.’
“If ye endure chastening, God dealeth with you as with sons; for what son is he whom the father chasteneth not? But if ye be without chastisement, whereof all are partakers, then are ye bastards, and not sons. Furthermore, we have had fathers of our flesh which corrected us, and we gave them reverence: shall we not much rather be in subjection unto the Father of spirits, and live? For they verily for a few days chastened us after their own pleasure; but he for our profit, that we might be partakers of his holiness. Now no chastening for the present seemeth to be joyous, but grievous: nevertheless, afterward it yieldeth the peaceable fruit of righteousness unto them which are exercised thereby.”- Heb. 12:6-11
At times God permits suffering to remove out of our lives the things that would keep us out of the kingdom of God.
Daily we should come to God and as Jesus stated ask in faith that the Lord delivers us from evil. From both categories of evil. Both the evil of a polluted heart and the evil that plagues the world as a result of sin. Christ is ever willing and able to set us completely free, thus answering our petition “deliver us from evil”
As humans created in the image of God with the gift of choice given to us, we must decide every day to choose good and not evil. We must not let sin fester in our hearts and lives else the fruit borne will only bring us pain and sorrow. God can set us free from sin and its evil consequences.
As long as we live on earth, we will continually be troubled by the evil that abounds all around as sin multiplies and the love of many waxes cold. However, there is great joy in the full and final deliverance that awaits us. Unspeakable joy will fill the hearts of the redeemed when final deliverance from all evil comes. Sorrow, pain, and sighing shall flee away, and eternal joy shall take hold of all who endure to the end. It is then that the seventh and last petition will receive its final and complete answer.