As any religion starts the profit uses miracles to proof that he is right. but in case of Islam which is the final religion sent to humans the God gave us a miracle that lasts tell this days and to the up coming days also.
This miracle is Simply the Quran which is the holy book of Muslims. Which we believe that this is the gods own words as he spoke and told to Prophet Muhammad and he protects from any change and this is the first miracle of it in two points
a) it is written by a specific artistic method that no one tell know have correctly made a single phrase that matches it although of the great trials all the Arab poets how were defying the prophet trying to proof that he is a liar could match (unfortunately only Arabs can assess this).
b) 14 centuries has passed since it was first said and tell now millions of people still pronounce it the same way the prophet did word by word and even the same tone of voice. And that is exactly why the following facts in it although that was absolutely impossible to know 14 centuries ago was mentioned in it.
1-if you divide the number of times sea or ocean was mentioned on the number of
times the earth was mentioned the result will equal the exact percentage of
water covered area to the dry earth on our planet.
2- black holes were mentioned in quran when the god talk about the extremely
dark scavenging movers in the universe which exactly match the black holes which
consistently move and there mass are so great that it absorb any thing come in
its way including light waves so they are the darkest object possible because
they reflect no light at all and eat every thing that come in its range of
gravity.
3- The God described the mountain by three things that was not known until the
modern age a) it moves all the time (which is true because the earth moves) b)
it has roots that extend deep inside the earth c) it balances the earth which is
also true because modern science say if it wasn’t for mountains the earth
wouldn’t be balanced on its movement around one axis.
4- The stages of creation of humans inside there mothers wombs were clearly
described in Quran as stated by some of non Muslim great embryology experts in
a conference in Saudi Arabia about 20 years ago.
5-The God mentioned that of seas meet but still every sea doesn’t affect the
other which is so true as the water in different oceans and seas have been
connected for millions of years without losing there specific characters like
salt concentration plus inside the sea there is rivers that has flow inside the
water without merging with them (if you have seen the movie Sphere you would know
what I mean).
6- The God also mentioned that the sea is waves over waves which is true because
in the bottom of the sea there is a complete waves that totally differ from the
surface waves (please realize that Muhammad the prophet how said the quran never
saw a sea in his life as he was living in the desert of Saudi Arabia). Also
these waves are not extension to surface waves as they have different speeds and
some times directions.
7- The God also mentioned in the Quran that the earth and the moon where one
then was separated and also mentioned that they were formed of hot gases then
condensed to solid earth
8- The God mentioned that he sent iron to earth. recent theories say that iron
was not an original component of earth but came as an asteroid from outside our
solar system and merged with earth.
9- The God said that he created the universe and consistently expanding it which
was proven by modern science as a fact.
10-The God also referred to the spider which make its net as a female spider
although no one on earth at that time knew that insects also has males and
females.
11-The God also mentioned that all creatures are formed of water
(any living creature contain plenty of water in its structure. God also
mentioned that we are created initially of mud (Human and animals contain the
same basic elements in mud in exactly equal percent and this year discovery: the
mud contain a component that helped into creating the first primitive RNA
molecules which was the beginning of the DNA or the genetic material which is
the basic of every living creature in the world.