Deut 18:18 - Jesus or Mohammed?

I was recently challenged by a Muslim who as is their habit, attempted to state God was speaking of the coming of Mohammed and not of Jesus in Deuteronomy 18:18, thus I left the argument below which I have posted here more for my convenience than anything else, though I may make it more ‘presentable’ in the future.

Deuteronomy 18:18
I will raise them up a Prophet from among their brethren [The Israelites], like unto thee [Moses], and will put my words in his mouth; and he shall speak unto them all that I shall command him.

So God told Moses that He was going to raise up from among his Jewish brethren one like unto him, who shall speak to them the words of God.

Moses was from the ‘tribe of Levi’ who had entered Egypt four hundred years earlier, even Levi the third child of Jacob [Israel] via Leah [Gen 29:34]. And Jacob who would later be renamed “Israel” [Gen 32:28] was the Son of Isaac the second son born to Abraham. And least we should forget, from whose line the saviour would come who as Moses before Him would be a mediator between God and men...

1 Timothy 2:5
For there is one God, and one mediator between God and men, the man Christ Jesus;

Additionally, the line from which he would spring was not from Ishmael’s seed but from Isaac’s...

Exodus 3:6
Moreover he said, I am the God of thy father, the God of Abraham, the God of Isaac, and the God of Jacob.

Therefore the saviour would come through the line of Isaac, the son of promises and not Ishmael Jesus affirming...

John 4:22
Ye worship ye know not what: we know what we worship: for salvation is of the Jews.

Ishmael had his own line instinct from the line of Isaac, the son of promises...

Genesis 17:20
And as for Ishmael, I have heard thee: Behold, I have blessed him, and will make him fruitful, and will multiply him exceedingly; twelve princes shall he beget, and I will make him a great nation.

Yet the Muslims great cry is that “Ishmael was born first, thus must be the line of the blessed” yet what do the scriptures say? For God promised Abraham that He would give him a son from his own bowels...

Genesis 15:4
And, behold, the word of the Lord came unto him, saying, This [Eliezer, Abraham’s servant] shall not be thine heir; but he that shall come forth out of thine own bowels shall be thine heir.

At the time the promise was given Abraham had one wife, Sarai [Sarah]. Thus reminded of Adam’s statement...

Genesis 2:21-24
21 - And the Lord God caused a deep sleep to fall upon Adam, and he slept: and he took one of his ribs, and closed up the flesh instead thereof;
22 - And the rib, which the Lord God had taken from man, made he a woman, and brought her unto the man.
23 - And Adam said, This is now bone of my bones, and flesh of my flesh: she shall be called Woman, because she was taken out of Man.
24 - Therefore shall a man leave his father and his mother, and shall cleave unto his wife: and they shall be one flesh.

Therefore the womb of Abraham at the time the promises was given was in Sarai, because they two were made one body through marriage. However, around ten years later Sarai began to doubt God’s promise, thus concocted a plan to make it happen by giving Abram her handmaid Hagar who bore for Abraham, Ishmael who was the child of their unbelief, the child bore from their works and not faith in God’s promises.

But when God makes an unconditional promise He keeps it, therefore nearly ten years later...

Genesis 17:19-21
19 - God said, Sarah thy wife shall bear thee a son indeed; and thou shalt call his name Isaac: and I will establish my covenant with him for an everlasting covenant, and with his seed after him. [CONCLUSIVE]
20 - And as for Ishmael, I have heard thee: Behold, I have blessed him, and will make him fruitful, and will multiply him exceedingly; twelve princes shall he beget, and I will make him a great nation.
21 - But my covenant will I establish with Isaac, which Sarah shall bear unto thee at this set time in the next year.

And indeed, God kept His promise to bring forth the child of promises...

Genesis 21:2-5
2 - For Sarah conceived, and bare Abraham a son in his old age, at the set time of which God had spoken to him.
3 - And Abraham called the name of his son that was born unto him, whom Sarah bare to him, Isaac.
4 - And Abraham circumcised his son Isaac being eight days old, as God had commanded him.
5 - And Abraham was an hundred years old, when his son Isaac was born unto him.

But of Ishmael we read...

Genesis 21:10-12
10 - Wherefore she [Sarai] said unto Abraham, Cast out this bondwoman and her son: for the son of this bondwoman shall not be heir with my son, even with Isaac.
11 - And the thing was very grievous in Abraham’s sight because of his son.
12 - And God said unto Abraham, Let it not be grievous in thy sight because of the lad, and because of thy bondwoman; in all that Sarah hath said unto thee, hearken unto her voice; for in Isaac shall thy seed be called.

Therefore the Old Testament, even the five Books of Moses clearly state the line of Ishmael, the child of their unbelief born of works is clearly distinct from the line of Isaac, the child of promise born from the faith of Abraham, from which we who believe spring. Yet although Muslims feign to believe in the five Books of Moses their only answer is that since Mohammed they have been corrupted... though we have even today copies older than he. I am reminded of Jesus’ words regarding the rich man in hades [not hell]...

Luke 16:29-31
29 - Abraham saith unto him, They have Moses and the prophets; let them hear them.
30 - And he said, Nay, father Abraham: but if one went unto them from the dead, they will repent.
31 - And he said unto him, If they hear not Moses and the prophets, neither will they be persuaded, though one rose from the dead. [As did Jesus]

Indeed, your only recourse regarding these truths is to cast doubt on the Word of God, as did the liar from the beginning...

Genesis 3:1-5
1 - Now the serpent was more subtil than any beast of the field which the Lord God had made. And he said unto the woman, Yea, hath God said, Ye shall not eat of every tree of the garden?
2 - And the woman said unto the serpent, We may eat of the fruit of the trees of the garden:
3 - But of the fruit of the tree which is in the midst of the garden, God hath said, Ye shall not eat of it, neither shall ye touch it, lest ye die.
4 - And the serpent said unto the woman, Ye shall not surely die:
5 - For God doth know that in the day ye eat thereof, then your eyes shall be opened, and ye shall be as gods, knowing good and evil.

At the beginning of this thread I clearly shew by the grace of God, that your Jesus is not the Jesus of scripture, and that your god who has no son is clearly not the God of the Biblical text, yet because you appear to have ignored that and no doubt shall ignore this, I see no reason to labour myself in answering the many points you have raised unless you request I do so though one at a time. I say this because it is my experience that when Muslims are confronted with such truths, they have but one recourse already mentioned, and that is to declare that where the Bible does not agree with their doctrine it has been changed but where it does... it hasn’t.

Why you would accept the testimony of someone whom having never met Jesus was born some six hundred years after His death, while ignoring the countless testimonies of those who saw, spoke, heard and touched Him is beyond me, though these are extremely important issues regarding nothing less than the future habitation of our very souls.

2 Peter 1:16
For we have not followed cunningly devised fables, when we made known unto you the power and coming of our Lord Jesus Christ, but were eyewitnesses of his majesty.

Who is your Mediator.