Hi!
I respect your belief, brother, but the idea that God is only for the Jews is not supported by the broader message of the prophets. In Islam, God is the One Creator of all people, all nations, and all times. Different peoples may call Him by different names, but He is still the same One God of the entire universe.
The prophets did not come to create separate gods for separate groups. They came to guide humanity back to the worship of the One God. Islam teaches that the message was always one: worship God alone and follow His guidance. Over time, however, communities changed, added interpretations, or lost parts of the original message. That is why Muslims believe God sent the final revelation through the Angel Gabriel to Muhammad, peace be upon him, as a final clarification and correction.
As for Jesus, peace be upon him, Muslims honor him deeply as a mighty prophet and Messiah, but not as God Himself. In the Gospels, Jesus prays to God, worships God, and refers to God as greater than himself. A prophet points people to God; he does not become God. That is why Islam sees Jesus as one of the greatest messengers, but still fully human and devoted to the One God.
So the question is not whether God belongs to one people or another. The question is whether we are willing to accept that God has always sent guidance to all humanity. From the Islamic view, He has — and that guidance was completed and preserved in the Qur’an.
As Salaamu Alaykum!
A former Christian