The message in the mosque is for the worshippers to be guided on the right path, so that in turn, they can spread it to other people to follow the words of Allah the Almighty.
The Prophet Mouhammed (SAW) was the first to come from the “School of Allah.”
Then Allah sent the Prophet Mouhammed to spread the message to his people. Sura Ahzab V.45-47: states “O prophet! Truly we have sent thee as a witness, a bearer of glad tidings. And a warner. And as one who invites to Allah’s (grace) by his leave, and as a lamp spreading light. Then give the glad tidings to be believers, that they shall have from Allah a very great bounty.”
The holy Quran stated in many verses, emphasising that the prophet (SAW) should continue spreading the message forever.
Sura Hajj V.67:”.......But do thou invite (them) to thy Lord: for thou out assuredly on the right way.” Sura Qasas also states in 87-88:” Let no one turn you away from Allah’s revelations after they have been revealed to thee: and invite (men) to thy Lord and be not of the company of those who join Gods with Allah.
And call not, besides Allah, on another God. There is no God but He. Everything (that exists) will perish except His Face. To Him belongs to command. And to Him will ye (All) be brought back. “Sura Ra’ad V.36 states:”..... say I am commanded to worship Allah, and not to join partners with Him. Unto Him do I call, and unto Him is my return.”
The profession of Prophet (Mouhammed) (SAWS) on earth was to spread the message of Allah to the people: to follow the right path, to leave what was forbidden and follow the right way set up by the Almighty. Prophet Mouhammed continued this way until after his death, and the Almighty rewarded him.
This verse marks the end of prophet Mouhammed’s (SAWS) mission on this earth. In Sura Maida V.3 states: “This day have I perfected your religion for you, completed my favour upon you, And have chosen for you Islam as your religion.”
The Prophets who came before Prophet Mouhammed (SAWS) were spreading the same message. To follow the right path and Allah’s command. Sura Araf V. 59 states about Prophet Noah and his people. It said: “We sent Noah to his people He said: O my people! Worship Allah! ye have no other God but Him. I fear for you the punishment of a dreadful day.”
Prophet Salih was sent to his people to spread Allah’s message stated in Sura Araf V.73: “To the Thamud people (we send) Salih one of their own brethren He said: “O my people ! Worship Allah, ye have no other God but Him........”
“To every people that passed on this earth, I have send a messenger to spread my call (Allah) to worship me.” Sura Nahl V.36 states: “For we assuredly sent amongst every people a messenger, (with the command) serve Allah, and eschew evil. Of the people were some whom Allah guided, and some on whom error became inevitably (established). So travel through the earth, and see what was the end of those who denied (the truth).”
To be able to spread the word of Allah that was done by the prophets; the particular person should have the following: - should understand the message before being able to spread it.
-to believe in the message that it is from Allah, if not your mind can change. The belief should be in side your heart; noting can turn you away from this message.
-to have connection with Allah; to believe that He is always seeing you and by your side.
If one of these mentioned is missing then the message will not be properly spread. Only knowledge can help you to be able to do this. Knowledge is the key to any work, especially the work of the Almighty.
-Since you always mentioned Allah’s name to spread His word, you should be strong and clear in what you say. Also when quoting the Prophet Mouhammed (SAWS).
If your preaching is not based on concrete evidence, it can create problems for you, because it is not based on the Holy Quran or hadith of the Prophet (SAWS).
According to Imam Ibnu Hambal “knowledge is necessary to man as he needs oxygen. It is more valuable that eating and drinking. “One can eat and drink once a day, but oxygen is needed throughout his life time.”
Allah said he is a “learned scholar”. Sura Zumar V:46 states: “Say O Allah creator of the heavens and the earth! knower of all that is hidden and open.......” knowledge is valuable to Allah. He even swear on the pen as in Sura Qalam V.1: “Nun, by the pen and by the (record) which (men) write.”
The first creature on earth Adam was taught by Allah. Sura Baqara V.31-32: “And the taught Adam the names of all things, then He placed them before the angels and said: “Tell me the names of these if ye are right. They said Glory to thee of knowledge. We have none; save what thou hast taught us; in truth it is thou who art perfect is knowledge and wisdom.”
All the Prophets of Allah have knowledge, even the last Prophet, Mouhammed (SAWS) was learned, to be able to preach to the people. Sura Iqraa states in V.1-4: “Proclaim (or read) in the name of thy Lord and cherisher, who created-created man, one of a leech-like clot. Proclaim! And thy Lord Is most bountiful, He who taught (the use of) the pen.”
Those who have knowledge of Allah and make use of it are different from the ignorant ones. Sura Zumar V.9 states: “Say; Are those equal, those who know and those who do not know? It is those who are endued with understanding that receive admonition.”
The one spreading the message should not add or subtract anything, should not tell lies to gather people or for money. He should be straight forward and do it as done by Prophet Mouhammed (SAWS). Sura Kahf V.29 states: “Say, the truth from your Lord, let him who will, believe and let him will reject.....”