Many people today who have heard of Jesus think He is a good chap. “He did lots of good things for people, didn’t he?” they might say. Indeed our Lord did many good works. He healed the sick, He taught the ignorant, He forgave sinners, and He restored lepers. This much most people are willing to accept as evidence of a good man. (In acknowledging this much they are of course conveniently ignoring that He also raised the dead, He exorcised demons, He disturbed as well as comforted, He angered some people until they hated Him, and He also claimed to be divine!)
Christ’s good works were not done however because He was a nice chap. They were signs. His mission was not to eradicate earthly evils: hunger, injustice, illness and death. Jesus performed messianic signs. He came not to abolish all evils on earth, but to free men from the greatest slavery, sin, which thwarts them in their vocation as God’s sons and daughters. The slavery of sin is the root cause of all forms of human bondage (Jn 8:34-36).
We need as Christians to appreciate that there are two kingdoms. One kingdom is of injustice, hunger, illness, misery, bondage and death – this is the kingdom of Satan. The Good News is that there is another kingdom – the Kingdom of God. The Kingdom of God is justice, generosity, health, blessed happiness, freedom and life eternal. The kingdom of Satan enslaves and it does so through sin. People cannot just merely choose not to do unjust things etc.; they are enslaved into thinking that some things are good when they are actually evil in God’s eyes. They are also enslaved by habits of thinking and habits of deed which cloud their vision and make it difficult to change.
So Jesus performed messianic signs pointing to another reality, but He called on people to repent, and He forgave sins. In some cases He performed exorcisms which freed some people from the domination of demonic powers.
It is therefore no good just battling against injustice, or hunger, or any particular evil, because if one does not go to the root of the problem they will continue to spring up over and over again. The battle we wage as Christians, in Christ’s name and in Christ’s power, is against the principalities and powers of the kingdom of Satan, and it is against sin. We Christians work most of all to free others from their enslavement to sin, and consequently their blindness to what is actually evil.