This is correct if and only if what is told about Jesus (peace be upon Him) is true .What if I say to you that the message of Jesus (peace be upon Him) was to worship only one God ?
Then I'd agree with you.
We know what was told to other prophets , we have it in the Qoran
Of course you do. But we don't believe you and we don't believe the Quran. We also don't believe that we would have all the books of the Old Testament unless God wanted us to see what each prophet wrote under his inspiration. Each book that was written by all those prophets was written in different style to reflect the (natural effect) or books written by different authors. That for instance Jeremiah was written by the prophet Jeremiah is as much a historical fact as the Iliad being written by Homer. Actions speak louder than words, although muslims claim to believe all the prior prophets, you don't.
Again : you say he failed provided Christianity is correct . .
True but what evidence is there that Prophet Mohammed's message confirmed the previous prophets other than the Quran? All the books of the Old Testament certainly don't support his prophethood and they were all written by the different revelant prophets.
Why can't Muhamad (peace be upon Him) the last prophet? Muhamad (peace be upon Him) clarified things and established the religion of Islam that has the same origin as CHristianity : God.
What needs clarification? That God loved us? That we all have sinned and fallen short of the glory of God? That Jesus died and rose again for our sins? That God in his mercy provided the Way, the Truth and the Life.
What about these verses need clarification?
RO 6:11 In the same way, count yourselves dead to sin but alive to God in Christ Jesus. 12 Therefore do not let sin reign in your mortal body so that you obey its evil desires. 13 Do not offer the parts of your body to sin, as instruments of wickedness, but rather offer yourselves to God, as those who have been brought from death to life; and offer the parts of your body to him as instruments of righteousness.
It was written before the Quran. It teaches submission to God of your mind, heart, body and soul. What new message did Mohammed bring and how did it help clarify anything?
Where Jesus say He who find his life will lose it, Mohammed's message teaches survival of the fittest. Where Jesus taught love your enemies, the Quran effectively teaches that even charity should only go to muslims. Where Jesus says, "Stop judging by mere appearances, and make a right judgment" the muslims are returned to seeing everything in the flesh.
All prophets called people to worship one God and not to associate partners with Him ; yet , CHristians say that Jesus is the son of God .
Is that what christians say?
MT 16:13 When Jesus came to the region of Caesarea Philippi, he asked his disciples, "Who do people say the Son of Man is?"
MT 16:14 They replied, "Some say John the Baptist; others say Elijah; and still others, Jeremiah or one of the prophets."
MT 16:15 "But what about you?" he asked. "Who do you say I am?"
MT 16:16 Simon Peter answered, "You are the Christ, the Son of the living God."
MT 16:17 Jesus replied, "Blessed are you, Simon son of Jonah, for this was not revealed to you by man, but by my Father in heaven.
If Jesus in the Gospel of Matthew said,
"this was not revealed to you by man, but by my Father in heaven" why would a man-made revelation make the confession: ""You are the Christ, the Son of the living God."" In addition, why would it enable anyone who read it to make that confession?
Instead it proves this statement which by inspiration from God was written 600 years before Prophet Mohammed was born, from 1 Corinthians 2:14:
14 The man without the Spirit does not accept the things that come from the Spirit of God, for they are foolishness to him, and he cannot understand them, because they are spiritually discerned.
Isaiah 46:9
Remember the former things, those of long ago;
I am God, and there is no other;
I am God, and there is none like me.
Isaiah 46:10
I
make known the end from the beginning,
from ancient times, what is still to come.
I say:
My purpose will stand,
and I will do all that I please.
What God says in advance - happens, it always has.
Again here is what the God of Heaven and Earth says:
Isaiah 41:26
Who told of this from the beginning, so we could know,
or beforehand, so we could say, `
He was right'?
No one told of this,
no one foretold it,
no one heard any words from you.