Why does God want to help mankind that he has created? There is a quote from the Book of Prophecy (Ofudesaki), which I feel is very profound.
I shall teach you step by step that this world is
the body of God. Ponder over it. 3-40
By deductive reasoning, if the world is the body of God, our bodies are part of God. Verse 3-41 confirms this:
All human bodies are things lent by God.
What thoughts are you using them? 3-41
By the law of causality, if we are using our minds to do bad things, the body suffers or is inconvenienced in the future. If we are part of God, then God is also said to be suffering because of our behavior. In the Book of prophecy, this suffering of God is called the regret of God.
The regret of God until now has accumulated
And is piled mountainously high. 7-61
How do we remove the regret or suffering of God? We must use our minds to do good by helping others. When the minds of the world become purified without greed, arrogance, and self love, human beings will bring upon a world that is prosperous and spirited due to the effects of causality; and God will become spirited and healthy because the world, which makes up God is healthy and prosperous.
An analogy would be like our bodies. We are made up of many organs. All these organs must function together for the body to be healthy. But if one organ becomes diseased, then the whole body may become ill. For God to become spirited and whole, all of his children, like the organs of the body must become healthy. We must purify our minds of evil.
But looking at the wars and conflicts of the world today, how would this task of purifying all the minds of the world become possible? Many will say it will be impossible; but in the Book of Prophecy (Ofudesaki), it is said that God has given us a special prayer (Joyous Service). With the acceptance of this prayer, God will help the world sweep the evils from all mankind. This is unlike any prayer. It is not a prayer that praises God or a prophet. It is not a selfish prayer; but it is a prayer asking for the salvation of others. It is a prayer to save all mankind. When mankind is spirited, then God will become whole and spirited.