As we have seen...
As we have seen, the existence of al-Badaa plays a central role in our way of expectation of al-Qa'im (PBUH). Due to the possibility of Badaa, the signs foretold are subject to change. According to the traditions, waiting for the Imam (PBUH) at any moment is the best deed and the most significant act. If the signs were unchangeable or could not be advanced, there would be no point to wait all the time and in every moment.
Having faith in alteration of the characteristics and the time of the events by Allah, everyone would keep himself ready every morning, every evening, and all the time in between to receive the Imam (PBUH). A person who has no faith in the alteration of signs and thinks of the reappearance of the Imam (PBUH) in terms of the sighting of all the signs is actually waiting primarily for those signs and then for the Imam (PBUH).
Such an individual may deny Imam al-Mahdi (PBUH) if he were to reappear without some of the signs being fulfilled. In contrast, the traditions give prime importance to the promise of the reappearance of the Imam (PBUH) and consider the appearance of the signs as a less important issue. Abu Ubaida al- Hadhaa narrated: I asked Imam al-Baqir (PBUH) about this matter (i.e., the reappearance of al-Mahdi (PBUH)).
He (PBUH) replied, "Because you expect that it comes to you in a (certain) way, do not deny it (if it happens in another way)."[^1] It is now clear that we should wait for the reappearance of Imam (PBUH) and not for the signs, and further, should not consider the Imam's reappearance before witnessing all the foretold signs impossible. It is only in this situation that imploring Allah to hasten the reappearance of Imam (PBUH) is meaningful. Allah is free to shower His blessings any time He wants.
He has created a leader for this task long ago and has kept him on call in concealment. He can order the reappearance of the Imam (PBUH) even before the sighting of the signs, can change, or miraculously expedite the occurrence of the signs for his early reappearance. Indeed, much more than any of His followers, the Imam (PBUH) himself is eagerly waiting for receiving Allah's permission at any moment. [^1]Bihar al-Anwar, vol. 52, p. 268, Hadith 157.
5 The significance and the purpose of specifying the signs Specifying the signs before the time of reappearance has its own advantages and benefits both before and after the occurrence of the signs.