Hi Dondi,
The Muslims have no contentions of the God of the Jews, for their God and the God of the Muslims is the same God. It is their religious teachings that we believe is corrupted to the extent where it renders the Jews rejectors of Gods true faith.
The Holy Quran makes clear that those who accept some of Gods Messengers and reject others, are the rejectors of faith, it also makes clear that those who reject Gods last revelation, the Holy Quran, are the rejectors of faith, thus the Jews are outside the folds of Gods true religion by rejecting the Prophet Jesus and Muhammed [PBUT] and rejecting Gods last and final revelation, the Holy Quran.
Here are some Quranic verses and hadiths in relation to the Jews, Christians, and all of Mankind:
"Lo! those who disbelieve [in Islam, the Quran and Prophet Muhammed] among the people of the Book [the Jews and the Christians] and the idolators, will abide in the fire of Hell, they are the worst of created beings" [Quran, 98:6]
"O followers of the Book [Christians and Jews], you follow no good, till you keep up the Torah and the Injeel [Bible] AND THAT WHICH HAS BEEN REVEALED TO YOU FROM YOUR LORD [THE QURAN]; and surely that which has been revealed to you from your Lord will make many of them increase in inordinancy and unbelief; grieve not therefore for the unbelieving people" [Quran, 5:68]
"Surely those who disbelieve in Allah and His Messengers, and [those who] desire to make a distinction between Allah and His Messengers, and say, "we believe in some and disbelieve in others", and desire to take a course in between, such are disbelievers in Truth; and for disbelievers we prepare a shamefull doom" [Quran, 4: 150-152]
"And when there came to them a Book from Allah [the Holy Quran], verifying that which they have [the Torah and the Bible], and aforetime they used to pray for victory over those who disbelieved, and when there came to them that which they did not recognise, they disbelieved in him, so Allah's curse is on the kaafiroon [rejectors of faith]" [2:89]
On the authority of Adil Ibn Hatim [ra], it is reported that he heard the the Messenger of Allah [sm] reciting the verse:
"They [Jews and Christians] took their Rabbi's and their Priests to be their Lords besides Allah..." [Quran 9: 31]
"...and I said to him: "We dont worship them". He [the Messenger [sm]] said: "Do they not forbid what Allah has permitted you and do you not then forbid it [to yourselves]?, and do they not make permissable for you what Allah has forbidden and do you not then make it permissable [to yourselves]"?, I replied "certainly!". He [sm] said: "That is worshipping them" [Narrated by At-Tirmidhi who graded it as well-authentic [hasan]]
"Narrated Abu Hurairah [ra], Allah's Messenger [sm] said: "By Him in Whose hands Muhammed's [sm] soul is, there is none from amongst the Jews and the Christians who hears about me, and then dies without believing in the Message which I have been sent [the Quran], but he will be from the dwellers of the Hell-Fire". [Sahih Muslim, Vol 1, hadith #240]
"And whoever seeks a religion other then Islam, it will not be accepted of him and in the hereafter, he will be one of the losers" [Quran 3:85]
"And none argue [that it's not the Truth] concerning the revelations of Allah [the Holy Quran...] except the disbelievers" [40:4]
"Verily Allah has cursed the disbelievers and has prepared for them a blazing fire, to dwell therein forever..." [Quran, 33:34]
Islam teaches that with the advent of the Prophet Muhammed [sm], all other previous divine religions have been abrogated and that all of mankind, who are to come untill the Last Day, are commanded by God, thus obligated, to follow the Prophet Muhammed, peace and blessings be upon him, and the message he was sent, the Holy Quran.
Hope this helps
Peace.