People who really understands the Quran reads it as a continuation of God revealing Himself to humanity.
Not quite if you are suggesting that Jesus is God.
Other than that, Muslims do believe that God has endowed people with His knowledge in every part of the world. There is nothing in Islamic teaching precluding a Muslims from accepting all the religious personalities as people sent by God to guide mankind.
This Qur'an is not such as can be produced by other than Allah. on the contrary it is a confirmation of (revelations) that went before it, and a fuller explanation of the Book - wherein there is no doubt - from the Lord of the worlds. Qur'an - 10:37 (Y. Ali)
It is He Who sent down to thee (step by step), in truth, the Book, confirming what went before it
Nay! he has come with the (very) Truth, and he confirms (the Message of) the apostles (before him). Qur'an - 37:37 (Y. Ali)
What Muslims will never accept is the association of anyone or anything with God.
Say: He is Allah, the One and Only
Allah, the Eternal, Absolute
He begetteth not, nor is He begotten
And there is none like Him Qur'an - 112:1-4 (Y. Ali)
God is too grand to fit in any place or person.
اللّهُ لاَ إِلَـهَ إِلاَّ هُوَ الْحَيُّ الْقَيُّومُ لاَ تَأْخُذُهُ سِنَةٌ وَلاَ نَوْمٌ لَّهُ مَا فِي السَّمَاوَاتِ وَمَا فِي الأَرْضِ مَن ذَا الَّذِي يَشْفَعُ عِنْدَهُ إِلاَّ بِإِذْنِهِ يَعْلَمُ مَا بَيْنَ أَيْدِيهِمْ وَمَا خَلْفَهُمْ وَلاَ يُحِيطُونَ بِشَيْءٍ مِّنْ عِلْمِهِ إِلاَّ بِمَا شَاء وَسِعَ كُرْسِيُّهُ السَّمَاوَاتِ وَالأَرْضَ وَلاَ يَؤُودُهُ حِفْظُهُمَا وَهُوَ الْعَلِيُّ الْعَظِيمُ
Allah. There is no god but He,-the Living, the Self-subsisting, Eternal. No slumber can seize Him nor sleep. His are all things in the heavens and on earth. Who is there can intercede in His presence except as He permitteth? He knoweth what (appeareth to His creatures as) before or after or behind them. Nor shall they compass aught of His knowledge except as He willeth. His Throne doth extend over the heavens and the earth, and He feeleth no fatigue in guarding and preserving them for He is the Most High, the Supreme (in glory). Qur'an - 2:255 (Y. Ali)
Secondly, Muslims also have a responsibility to not impose their faiths or religious practices on others.
لاَ إِكْرَاهَ فِي الدِّينِ قَد تَّبَيَّنَ الرُّشْدُ مِنَ الْغَيِّ فَمَنْ يَكْفُرْ بِالطَّاغُوتِ وَيُؤْمِن بِاللّهِ فَقَدِ اسْتَمْسَكَ بِالْعُرْوَةِ الْوُثْقَىَ لاَ انفِصَامَ لَهَا وَاللّهُ سَمِيعٌ عَلِيمٌ
Let there be no compulsion in religion: Truth stands out clear from Error: whoever rejects evil and believes in Allah hath grasped the most trustworthy hand-hold, that never breaks. And Allah heareth and knoweth all things. Qur'an - 2:256 (Y. Ali)