Muslims claim when Jesus Christ comes back on his second coming he will preach Islam and everyone will bow to him?

Let us look at this claim that Jesus Christ on his return will come and show the world that we should all be following Islam which is the truth and not Christianity.

Christianity is never a new religion like Islam claims for itself.  The false belief that Muslims and other people hold that Jesus Christ brought a new religion is untrue, however there are a lot of heretical sects that have appeared the likes of Jehovah's Witness, Mormons etc.

Jesus of Nazareth (Messiah) was simply continuing from where the other prophets left off to come and not abolish the Torah as most believe but establish correctly and save the people, the promised Messiah to the Jews.

For this we have to look at the wider issue and see what will happen when Jesus Christ returns, how will this affect the whole Muslim world in the future.

The Bible is quite clear that not only the Arabs but other Muslims hate the Jews, the Bible mentions nations by name, this hatred which was to characterize the descendents of Ishmael and Esau began as early as Gen 25 where Esau sold his birthright to Jacob and this has continued throughout the Biblical period and into modern history as we know it.

Psalm 83:1-8 summarizes this nicely.

^83:1God, don't keep silent.
      Don't keep silent,
      And don't be still, God.

 ^83:2For, behold, your enemies are stirred up.
      Those who hate you have lifted up their heads.

 ^83:3They conspire with cunning against your people.
      They plot against your cherished ones.

 ^83:4"Come," they say, "and let's destroy them as a nation,
      That the name of Israel may be remembered no more."

 ^83:5For they have conspired together with one mind.
      They form an alliance against you.

 ^83:6The tents of Edom and the Ishmaelites;
      Moab, and the Hagrites;

 ^83:7Gebal, Ammon, and Amalek;
      Philistia with the inhabitants of Tyre;

 ^83:8Assyria also is joined with them.
      They have helped the children of Lot.

The Psalmist begins by describing a united conspiracy against Israel (Verse 1-3).  They are united together against the Israelites, their aim is the total annihilation of Israel to possess the land so that the very NAME Israel will not be remembered verse 4.

Isn't it a coincident that Nassser, the former dictator of Egypt, almost repeated this verse word for word just prior to the six day war.

The various nations that are conspiring against Israel in the old testament are:

This conspiracy has been present since 1948 as we know since the gathering of Israel into a nation and was evidenced more so during the six day war, it will have it's full force in the great tribulation.

Some Muslim countries still do not accept Israel as a nation and one such nation is Pakistan.

Three other prophets pointed out this perpetual hatred against Israel, especially by Edom modern Southern Jordan.

In Ezekiel 35:1-5:

 For the violence done to your brother Jacob, shame will cover you, and you will be cut off forever.  In the day that you stood on the other side, in the day that strangers carried away his substance, and foreigners entered into his gates, and cast lots for Jerusalem, even you were like one of them. But don't look down on your brother in the day of his disaster, and don't rejoice over the children of Judah in the day of their destruction. Don't speak proudly in the day of distress. Don't enter into the gate of my people in the day of their calamity. Don't look down on their affliction in the day of their calamity, neither seize their wealth on the day of their calamity. Don't stand in the crossroads to cut off those of his who escape. Don't deliver up those of his who remain in the day of distress.

The Lord has a particular thing about Dumah in Arabia.

Burden of Dumah (Arabia)

“The burden of Dumah. He calleth to me out of Seir, Watchman, what of the night? Watchman, what of the night? The watchman said, The morning cometh, and also the night: if ye will enquire, enquire ye: return, come.” (Isaiah 21:11-12)

What will happen to Saudi Arabia according to God in the Bible?

Kedar and Hazor (Saudi Arabia)

Peace will come between Israel and Saudi Arabia by means of destruction.  This is taught in Jeremiah 49:28-23.

Of Kedar, and of the kingdoms of Hazor, which Nebuchadnezzar king of Babylon struck. Thus says Yahweh: Arise you, go up to Kedar, and destroy the children of the east. Their tents and their flocks shall they take; they shall carry away for themselves their curtains, and all their vessels, and their camels; and they shall cry to them, Terror on every side! Flee you, wander far off, dwell in the depths, you inhabitants of Hazor, says Yahweh; for Nebuchadnezzar king of Babylon has taken counsel against you, and has conceived a purpose against you. Arise, go up to a nation that is at ease, that dwells without care, says Yahweh; that have neither gates nor bars, that dwell alone. Their camels shall be a booty, and the multitude of their cattle a spoil: and I will scatter to all winds those who have the corners of their hair cut off; and I will bring their calamity from every side of them, says Yahweh. Hazor shall be a dwelling-place of jackals, a desolation forever: no man shall dwell there, neither shall any son of man sojourn therein.

This passage describes total devastation of Saudi Arabia by war until the inhabitants are scattered and dispersed all over the world.  As for the land itself, Jeremiah states 49:33 states:

Hazor shall be a dwelling-place of jackals, a desolation forever: no man shall dwell there, neither shall any son of man sojourn therein.

The land of Saudi Arabia will be a permanently destroyed, and the residents will be dispersed so the Bible does not mention any sign of peace through any treaties.  The book of Revelation is quite clear the Harlot that is Saudi Arabi will be burned.  The reason the burning is because of it's oil one day will burn by explosions and warfare.