The certainty of the appearance of Hazrat Mahdi (peace be upon him), means that he will definitely come, is something that Shia and Sunni believe in, and even non-Muslims have given their followers the news of a savior in the end of time in their books.
1.1 - Torah
For example: In the Torah, the prophet Isaiah, chapter 11 says:
"... He will judge the poor with justice, and he will judge the oppressed of the earth with truth... The wolf will dwell with the lamb, and the leopard will lie down with the goat, and the calf and the lion will feed together, and the little child will want them. Rand... They will not harm or corrupt in all my holy mountain. Because the world will be filled with the knowledge of God."
1.2 - Old Testament
In the Old Testament, the Book of Psalms, Psalm 37, it is said:
"... because the wicked will be cut off, but those who wait for God will inherit the earth. Han! After a while, he will not be evil. You will meditate in its place and it will not be, but the meek people will inherit the earth... and it will be their inheritance forever.
In Surah Anbiyyah verse 105, we read: "And it is written in the Book of Al-Zabbu, after the mention that the earth inherits the righteous worshipers."
That is: We wrote in the psalm (Dawood (peace be upon him)) that finally, my worthy servants will inherit the earth. Now, once again read the text of the psalm that we brought in this article and compare it with this verse and see how God preserved this part of the psalm so that future generations will know that the government of the earth will eventually fall into the hands of worthy people and the fate of wicked and cruel people. There is nothing but destruction."
1.3 - Gospel of Luke
In the Gospel of Luke, chapter 12, it is stated:
"Gird up your loins, keep your lamps burning, and be like those who wait for their master when he returns from the wedding, so that whenever he comes and knocks, the door will be opened to him immediately. Happy is the condition of those slaves when their master comes to find them awake. Therefore, be prepared, because the Son of Man will come at an hour you do not expect.
The meaning of Luke's Gospel is the same as waiting for Faraj, which according to Shia is really waiting for the appearance of the Imam of the Time (peace be upon him) like someone who is waiting for the arrival of a dear guest who has already cleaned the house and prepared the food.
A person who waits for Imam Mahdi avoids sins. A believer loves good deeds and commands them, and hates bad deeds and forbids them, and because he is waiting for the destruction of oppression, he fights against it as much as he can. He is the helper of truth and justice and the enemy of falsehood and justice.
The meaning of waiting for Imam Zaman is the same as in the traditions of the Ahl al-Bayt (peace be upon him) it is considered the best of acts of worship. Tirmidhi narrated the original narration from the beloved Messenger of Islam (peace and blessings of Allah be upon him) who said: "The best form of worship is waiting for Al-Faraj."
