Summary
1)     All misguided sects believe that only they will have the best future.
2)     The certainty of all believers that the support of Allaah will come.
3)     The future belonging to Islaam due to:
a.      Islaam honouring mankind.
b.      Islaam not contradicting the laws of nature or sound reasoning.
c.       Islaam being founded on a well-defined community system.
d.      Islaam being the religion of justice and equal rights.
e.      Islaam protecting man’s honour and soul.
4)     Islaam ultimately prevailing regardless of all the conspiracies to uproot it.
5)     The necessity of Muslims to practice Islaam.
 
All praise is due to Allaah. May His peace and blessings be upon Prophet Muhammad, his household and companions.
Brothers in faith! Be dutiful to Allaah, for that is the best provision and the surest way to salvation on the Day of Resurrection.
 
Fellow Muslims! Things turn upside-down when those who follow destructive and erroneous sects and beliefs falsely assume that theirs is the true faith and that the good ending and future belongs exclusively to them. But the fact that men of reason and understanding do not dispute is that, the future belongs to this religion of Islaam; that it shall prevail over all other beliefs, for it is the only true religion that Allaah has perfected for His slaves and with which He has completed His favour upon them and which that He has chosen for them as religion. He says that which translates to:
“This day I have perfected for you your religion and completed My favour upon you and have approved for you Islaam as your religion.”  (Al-Maa’idah:3).
 
No wonder then dear brothers, that Islaam enjoys such a distinguished position. This is because it is a religion that is full of innumerable qualities.
The future belongs to Islaam for it is the religion with which Allaah raised the status of man and honoured him. He informed us in His Speech, which is the most-truthful of all speech, that He created man with His two Hands, breathed of His soul in him and made the angels prostrate before him. He honoured man by subjecting him to His worship Alone, for there is no deity worthy of worship except Him, glorified are His Names and Attributes. He honoured him by subjecting all that is in heavens and earth to him and gave him innumerable other blessings.
 
The future belongs to Islaam because it is the only religion that’s message is characterised by pure monotheism and that agrees with the laws of nature and sound opinion. It is through Islaam that Allaah made lawful for His slaves all good and useful things and prohibited all filthy and harmful matters. Removed from this ummah are the heavy burden and fetters that were upon those who came before them; such as strictness in matters of religion like the imposition of self-killing as an atonement for sin, cutting the part of the human-body used for committing an impure act, purifying  the cloth by cutting off the place of filth with scissors, compulsory implementation of the law of equity in murder cases (with no option of paying blood money or pardon whether the killing was intentional or  accidental) and prohibition of taking war booty.
 
All the above restrictions were removed by Allaah from this ummah by His Mercy. He says that which translates to: “Those who follow the Messenger, the unlettered prophet, whom they find written [i.e. mentioned] in what they have of the Torah and the Gospel, who enjoins upon them what is right and forbids them what is wrong and makes lawful for them the good things and prohibits for them the evil and relieves them of their burden and the shackles which were upon them. So they who have believed in him, honoured him, supported him and followed the light which was sent down with him – it is those who will be successful.” (Al-A’raaf:157).
 
The future belongs to Islaam in that it is the religion with which Allaah firmly laid the basis of a sound social system that is well-connected like a firm structure. He established through Islaam that unique society described by the Prophet sallallaahu ‘alaihi wa sallam in the most eloquent way thus: “The similitude of the believers in regard to mutual love, affection and mutual-compassion is that of one body; when any limb of it aches, the whole body shares the agony, sleeplessness and fever that arises from it.” (Al-Bukhaari & Muslim).
 
The future belongs to Islaam because it is the religion by which Allaah firmly fixed the principles of justice among His creatures:  Muslims and non-Muslims; Arabs and non-Arabs; black and white; male and female; young and old. He prescribed for each group it’s rights and duties; a quality that is non-existent in any of the man-made systems and ideologies that most people follow and respect. These are full of deficiencies and are restricted to a place, time or personal or national interests of those who formulated them.
 
The future is for this religion, for it is the religion with which Allaah preserves people’s lives, properties, honour and minds. He prohibits all killing of life except for a just cause, forbids the defamation of people’s honour, disallows all that could affect the soundness of people’s minds such as narcotics and intoxicants and forbids the usurpation of people’s properties unjustly. All this Allaah does through Islaam in order to protect the social structure of this ummah from disintegrating.
 
There is no wonder then that a great and honourable future belongs to this religion. No amount of deception from the enemies of Islaam, nor the amount of their assaults on the Muslims with their cavalry, infantry and wealth, nor their oppression such as killing and expelling people from their lands - as the Jews do today, can weaken the firm bonds of this religion or disrupt its structure. For the future is for Islaam and the Muslims Inshaa’ Allaah and the victory belongs to Allaah and His Messenger and to the truthful and persevering Muslims; those who  know with certainty that victory comes with perseverance,  relief comes after sorrow and that with every difficulty there is ease. Allaah says that which translates to: “They want to extinguish the light of Allaah with their mouths, but Allaah refuses except to perfect His light, although the disbelievers hate it.” (At-Tawbah: 32).
 
Brothers in faith! If this Ummah wishes to attain the promised victory and be well-established on the land, it should truly practice Islaam by giving Allaah His right of worship with all sincerity and totally abstaining from associating anything with Him in acts of worship. It should implement His Law and submit to His judgment in all matters and be pleased with that. It is then that the whole of mankind will have felicity - and the rightly-guided leadership will become that of Islaam, the religion of Allaah, the Omniscient, the All-Wise, the All-knowing.