That is why these cruel qualities are natural to the animal world.
Therefore the Lord of mankind, having great love and mercy, has caused the appearance of the prophets and the revelation of the Holy Books, so that through divine education humanity may be released from the corruption of nature and the darkness of ignorance, be confirmed with ideal virtues and spiritual attributes, and become the dawning-place of merciful emotions....
A hundred thousand times, alas! that ignorant prejudice, unnatural differences and antagonistic principles are yet displayed by the nations of the world toward one another, thus causing the retardation of general progress.

This retrogression comes from the fact that the principles of divine civilization are completely abandoned, and the teachings of the prophets are forgotten.
The Most Great Peace In all ages the Prophets of God have foretold the coming of an era of "peace on earth, goodwill among men." As we have already seen Baha'u'llah, in the most glowing and confident terms, confirms these prophecies and declares that their fulfillment is at hand.

'Abdu'l-Baha says:-- ...

in this marvellous cycle, the earth will be transformed, and the world of humanity arrayed in tranquility and beauty.

Disputes, quarrels, and murders will be replaced by peace, truth, and concord; among the nations, peoples, races, and countries, love and amity will appear.