Why does the Holy Qur’an say that truth has come and falsehood has vanished?
It is a single statement, expressed once in positive and once in negative terms. Truth and falsehood are opposites, and where truth arrives, falsehood has to give way.
The first verse above says that truth has come and falsehood has vanished. Some ask why both are mentioned. If God is almighty and truth arrives, the second part seems obvious.
The answer is simple. It is the same statement, once from the positive side and once from the negative. Truth and falsehood are opposites. The coming of the one means the disappearance of the other. Naming both makes the statement complete and gives it emphasis.
Behind this lies an important idea. Truth does not simply arrive alongside falsehood so that both carry on side by side. It takes its place. Falsehood has no power of its own. The second verse above says it can neither originate anything nor restore it. It lives only from the fact that truth is not yet there.
That is why it is also said that falsehood vanishes fast. It may seem strong for a while, but it has no firm ground. When truth is clearly in view, it loses its hold. For the reader this is an encouragement. Whoever holds to the truth stands on the side that remains.