Please note that this write up is for muslims alone.
There are muslims who are usually being preached to by their friends/neighbours to convert to christianity. Its a common thing here that when a Christian wants you to convert to his religion, his first move is to be very nice to you and later followed by preaching with lots of love and care. Most muslims are usually deceived by these acts especially those who might not know some basic facts in comparative studies.
There are many topics you can choose from to challenge a Christian. I will just go into THE AUTHENTICITY OF THE BIBLE since that's the center of reference to what he might want to talk about.

We Muslims have no hesitation in
acknowledging that in the Bible, there
are three different kinds of witnessing
recognizable without any need of
specialized training. These are:
1. You will be able to recognize in the
Bible what may be described as "The
Word of God."
2. You will also be able to discern what
can be described as the "Words of a
Prophet of God."
3. And you will most readily observe that
the bulk of the Bible is the records of eye
witnessess or ear witnesses, or people
writing from hearsay. As such they are
the "Words of a Historian"
You do not have to hunt for examples of
these different types of evidences in the
Bible. Anyway, here are some of the examples:

The FIRST Type:
(a) I will raise them up a prophet . . . and
I will put my words in ... and he shall
speak unto them all that I shall
command him." (Deuteronomy 18:18)
(b) I even, I am the Lord, and beside me
there is no saviour." (Isaiah 43:11)
(c) "Look unto me, and be ye saved, all
the end of the earth: for I am God, and
there is non else." (Isaiah 45:22)
Note the first person pronoun singular in the above
references, and without any difficulty
you will agree that the statements seem
to have the sound of being GOD'S
WORD.
The SECOND Type:
(a) "Jesus cried with a loud voice,
saying Eli, Eli, lama
sabachtani? . . ." (Matthew 27:46)
(b) "And Jesus answered him, The first
of all the commandments is, Hear, O
Israel; the Lord our God is one
Lord:" (Mark 12:29)
(c) "And Jesus said unto him, Why
callest thou me good? There is none
good but one, that is God." (Mark 10:18).
Even a child will be able to affirm that:
Jesus "cried" Jesus "answered" and
Jesus "said" are the words of the one to
whom they are attributed, i.e. the
WORDS OF A PROPHET OF GOD.
The THIRD Type:
"And seeing a fig tree afar off having
leaves, he, (JESUS) came, if haply he
(JESUS) might find anything thereon:
and when he (JESUS) came to it, (Jesus)
found nothing but leaves . . ." (Mark
11:13)
The bulk of the Bible is a witnessing of
this THIRD kind. These are the words of
a third person. Note the underlined
pronouns. They are not the Words of God
or of His prophet, but the WORDS OF A
HISTORIAN.
Now let's analyse if this bible is actually a book of God

Let's talk about the Injeel? INJEEL means
the "Gospel" or "good news" which Jesus
Christ preached during his short
ministry. The "Gospel" writers often
mention that Jesus going about and
preaching the Gospel (the Injeel):
1. "And Jesus went . . . preaching the
gospel . . . and healing every disease
among the people." (Matthew 9:35)
2. "... but whosoever shall lose his fife for
my sake and the gospel's, the same
shall save it." (Mark 8:35)
3. "... preached the gospel. . ." (Luke
20:1)
The "gospel" is a frequently-used word,
but what Gospel did Jesus preach? Of the
27 books of the New Testament, only a
small fraction can be accepted as the
words of Jesus. The Christians boast
about the Gospels according to St.
Matthew, according to St. Mark,
according to St. Luke and according to
St. John, but there is not a single Gospel
"according" to (St.) Jesus himself! We
sincerely believe that everything Christ
(May the peace and blessings of God be
upon him) preached was from God. That
was the Injeel, the good news and the
guidance of God for the Children of
Israel. In his life-time Jesus never wrote a
single word, nor did he instruct anyone
to do so. What passes off as the
"GOSPELS" today are the works of
anonymous hands!

When you quote a verse in the bible to a christian that he hasn't come across, he asks a very common questio,"which bible is that from?"
The Catholic Bible.
The Roman Catholic Bible was published
at Rheims in 1582, from Jerome's Latin
Vulgate and reproduced at Douay in
1609. As such the RCV (Roman Catholic
Version) is the oldest Version that one
can still buy today. Despite its antiquity,
the whole of the Protestant world,
including the "cults"* condemn the RCV
because it contains seven extra "books"
which they contemptuously refer to as
the "apocrypha" i.e. of DOUBTFUL
AUTHORITY. Notwithstanding the dire
warning contained in the Apocalypse,
which is the last book in the RCV
(renamed as "Revelation" by the
Protestants), it is "revealed":
". . . If any man shall add to these things
(or delete) God shall add unto him the
plagues written in this Book."
(Revelation 22:18-19)
But who cares! They do not really
believe! The Protestants have bravely
expunged seven whole books from
their Book of God! The outcasts are:
The Book of Judith
The Book of Tobias
The Book of Baruch
The Buck of Esther, etc.
* This disparaging title is given by the
orthodox to Jehovah's Witnesses, the
Seventh Day Adventists and a thousand
other sects and denominations with
whom they do not see eye to eye.
The Protestant Bible
Sir Winston Churchill has some pertinent
things to say about the Authorised
Version (AV) of the Protestant Bible,
which is also widely known as the "King
James Version (KJV)".
"THE AUTHORISED VERSION OF THE
BIBLE WAS PUBLISHED IN 1611 BY THE
WILL AND COMMAND OF HIS
MAJESTY KING JAMES THE 1ST WHOSE
NAME IT BEARS TILL TODAY."
The Roman Catholics, believing as they
do that the Protestants have mutilated
the Book of God, are yet aiding and
abetting the Protestant "crime" by
forcing their native converts to purchase
the Authorised Version (AV) of the Bible,
which is the only Bible available in some
1500 languages of the lesser developed
nations of the world. The Roman
Catholics milk their cows, but the
feeding is left to the Protestants! The
overwhelming majority of Christians —
both Catholics and Protestant — use the
Authorised (AV) or the King James
Version (KJV) as it is alternatively
called.
Glowing Tributes
First published, as Sir Winston says, in
1611, and then revised in 1881 (RV),
and now re-revised and brought up to
date as the Revised Standard Version
(RSV) 1952, and now again re-re-revised
in 1971 (still RSV for short). Let us see
what opinion Christendom has of this
most revised Bible, the RSV:-
1. "THE FINEST VERSION WHICH HAS
BEEN PRODUCED IN THE PRESENT
CENTURY." — (Church of England
Newspaper)
2. "A COMPLETELY FRESH TRANSLATION
BY SCHOLARS OF THE HIGHEST
EMINENCE." — (Times literary
Supplement)
3. "THE WELL-LOVED CHARACTERISTICS
OF THE AUTHORISED VERSION
COMBINED WITH A NEW ACCURACY OF
TRANSLATION." — (Life and Work)
4. "THE MOST ACCURATE AND CLOSE
RENDERING OF THE ORIGINAL" — (The
Times)
The publishers (Collins) themselves, in
their notes on the Bible at the end of
their production, say on page 10: "THIS
BIBLE (RSV), IS THE PRODUCT OF
THIRTY-TWO SCHOLARS, ASSISTED
BY AN ADVISORY COMMITTEE
REPRESENTING FIFTY CO-OPERATING
DENOMINATIONS." Why all this
boasting? To make the gullible public
buy their product? All these testimonies
convince the purchaser that he is
backing the right horse, with the
purchaser little suspecting that he is
being taken for a ride.
"The World's Best Seller"
But what about the Authorised Version of
the Bible (AV), the "World's Best Seller?"
These Revisers, all good salesmen, have
some very pretty things to say about it.
However, their page iii, paragraph six of
the PREFACE of the RSV reads;
"THE KING JAMES VERSION (alternative
description of AV) HAS WITH GOOD
REASON BEEN TERMED 'THE NOBLEST
MONUMENT OF ENGLISH PROSE.’ ITS
REVISERS IN 1881 EXPRESSED
ADMIRATION FOR 'ITS SIMPLICITY, ITS
DIGNITY, ITS POWER, ITS HAPPY
TURNS OF EXPRESSION ... THE
MUSIC OF ITS CADENCES, AND THE
FELICITIES OF ITS RHYTHM.’ IT
ENTERED, AS NO OTHER BOOK HAS,
INTO THE MAKING OF THE PERSONAL
CHARACTER AND THE PUBLIC
INSTITUTIONS OF THE ENGLISH-
SPEAKING PEOPLES. WE OWE TO IT AN
INCALCULABLE DEBT."
Imagine a more
magnificent tribute being paid to the
"Book of Books" than the above? I, for
one, cannot. Let the believing Christian,
now steel himself for the un-kindest blow
of all from his own beloved Lawyers of
Religion; for in the very same breath
they say:
"YET THE KING JAMES VERSION HAS
GRAVE DEFECTS." And, "THAT THESE
DEFECTS ARE SO MANY AND SO
SERIOUS AS TO CALL FOR
REVISION . . ." This is straight from the
horse's mouth, i.e. the orthodox Christian
scholars of "the highest eminence."
Another galaxy of Doctors of Divinity are
now required to produce an
encyclopaedia explaining the cause of
those GRAVE AND SERIOUS DEFECTS in
their Holy Writ and their reasons for
eliminating them.
...After all these, ask a christian why should a book of God be tempered with like this...is it an ordinary book that you can revise when u deem fit?do u consider a book as this as a word of God?

This only shows how paranoid the people of certain faith are-

Scared of your neighbours?

Logicboy03: This only shows how paranoid the people of certain faith are-

Scared of your neighbours?

I wnt say dat if I were u...I wd thnk abt d content instead of escaping from the truth