As these verses reveal, the Children of Israel were to cause two corruptions over the world. After the first one, during which they adopted a very high level of haughtiness, Allah sent a powerful army against them. Indeed, when the Jews killed Prophet Yahya (as) and set a trap to kill Prophet 'Isa (as) ("reaching to a degree of great haughtiness"), they were exiled shortly afterwards from Jerusalem by the Romans in 70 and wandered all over the world.We decreed in the Book for the tribe of Israel: "You will twice cause corruption on Earth and you will reach [a degree of] great haughtiness. When the promised first time came, We sent against you servants of Ours possessing great force, and they ransacked your houses, rampaging right through them. It was a promise that was fulfilled. Then once again We gave you the upper hand over them, supplied you with more wealth and children, and made you the most numerous group." (Qur'an, 17:4-6)
When that verse was revealed to the Prophet (saas), the Jews were living under very difficult conditions in various countries and had no state of their own. Yet, Allah told the Children of Israel that one day they would recover their strength. At that time, however, there seemed to be almost no chance that this would really happen. Many centuries later, however, the Jews returned to Palestine and established the State of Israel in 1948. Today, Israel possesses military and political power and keeps the Middle East in great turmoil because of its Zionist ideology and harsh treatment of Palestinian Muslims and Christians.
This is a sign of the Children of Israel's second "corruption." However, this wicked behaviour clearly does not apply to the entire Jewish people, among whom there are many individuals of good conscience and common sense who do not agree with Israel's Zionist and anti-Arab policies.
In this and other verses, we notice that almost no one could believe that such things would ever come about. But Allah willed their fulfilment, and thereby provided believers with more proof that the Qur'an is a miraculous book revealed by Him for their benefit.