Thus, we learn that humanity declined to its current state through a gradual process which began with several simple mistakes. Over many generations, the knowledge of God and His Torah which our ancestors possessed was completely forgotten.
However, out of love for us, God preserved this knowledge so that when we finally realized the mistake of our ancestors, we would have the opportunity to rectify it. He did this by creating and protecting the Jewish people, who have faithfully preserved the Torah to this very day.
This brings us to the point in history in which we currently live.
The prophets of old, however, foresaw a time when all humanity would realize the error of their ancestors. Upon realizing their error, they would go to the one remaining source of Torah – the Jewish people. As it says, "Nations shall come to you from the ends of the earth and say, 'Surely, our fathers have inherited lies and vain things in which there is no benefit.'" (Jeremiah 16:19)
When the peoples of the world finally return to the Torah, God will bring them together in a state of peace and love, as the prophet says, "...he shall turn the heart of the fathers to the children, and the heart of the children to their fathers." (Malakhi 3:24) And, "I will make the people pure of speech that they all call upon the name of God and serve Him with one purpose." (Zephaniah 3:9)
Working together in unity, we will then lead the world into a state of perfection, in which "...there will be neither famine nor war, envy or competition, for good will flow in abundance and all delights will be [as common] as dust. [In this era,] the occupation of the entire world will be solely to know God..... As [Isaiah 11:9] states: 'The world will be filled with the knowledge of God, as the waters cover the sea.'" (Rambam, Mishneh Torah, Hilkhoth Melakhim 12:5)
May that day arrive swiftly and soon.