Messenger's of another faith. Why should those already faithful to God listen to an alien faith?
They already believed in the Creator. The 'idols and totems' were extra but above all they knew there was a Creator.
Most people do. Even Muslims.
MIGHT - and that right there is the crux of it all. They MIGHT be wrong.
Or might not.
It is up to the person to decide and if they decide YOU are the wrong, then that is their solid Faith speaking.
Wrong Do-ers, for denying what an alien God wanted them to do?
Would YOU accept such a person going to you and saying "Your way of Faith and Worship is wrong; choose this way or be labelled Anti-God"? I highly doubt it.
No, that's not how it works. If a people return to their ancient ways, it's for various reasons and not just because they 'think God commanded thus'.
But for you, Muslims are the only important people.
Which other books do as well so the Quran is not that special. It is, like those other books, historically written by Men and edited by Men and made to rule over Men with the excuse of God and displeasing said God as a punishment, using fear of a soul death.
The crux - which version of God deserves the exclusive devotion?
And yet the Faith of Christians is that Jesus IS God - an Avatar, if you will - of God, which is why he holds that High position.
You use that he was a prophet as an excuse to say "He's not God" and that's fine.
But who is to say YOUR prophet was as right as Jesus was, or as the forefather's of the Torah were, about God?
What makes YOUR Faith that much better than others? Because your people deem it the "last"? That's not a reason. That's just an edit in Faith.
Your faith is your own, and that's fine.
Pushing Faith on others, however, is Evil, as evil as you think idolatry and totems are. Because in the end, you are doing to others, what you would not stand be done to you.
God is not alien, and His religion is not an alien faith.
God is the Creator: the Lord of all nations.
He sent many messengers to guide people
against the idolatry which is the equalizing others with Him, and to guide them to worship Him alone and not anyone or anything else, because all other beings are His creatures, and the worship should be to the Creator.
God has many names with different peoples and languages: some call Him God, others call HIm the Great Spirit, others call Him Jehovah, and Allah and Khodah. Still He is the same One God Most Gracious and All-Mighty.
God sent many messengers out of their nations: to call them to worship Him alone and to discard other patrons or idols or totems ... etc.
And He revealed many heavenly books: the Scripture of Abraham, the Torah of Moses, the Psalms of David, the Gospel of Jesus and the Quran to Mohammed.
The first books were distorted and altered, with the exception of the last heavenly book the Quran which is preserved as it is.
The creed principles have been changed into idolatry like the Trinity and claiming a son to God or that Jesus is God Himself, and people by passing of time inclined to follow the idolatry rather than the 'exclusive devotion to God alone.
Therefore, it is not correct to disregard the messenger of God and the book revealed to Him by claiming he is alien.
Prophet Mohammed is sent to all man-kind and genie-kind. And
the Quran is far better than all the present heavenly books because they have been altered and edited, while the Quran is known by heart like you know a poem by heart.
The principal teaching of the Quran is to worship God alone and not anyone else.
Quran 7: 158, which means:
(
Say [O Mohammed]: "O mankind, I am sent to all a of you, by God Who owns the heavens and the earth b; there is no god but He [alone]; He gives life and causes death.
Believe, then, [O people] in God, and in His messenger: the illiterate prophet [: Mohammed], who believes in God [and does not associate anything with Him], and [believes in] His words [: the Ten Commandments inscribed on the Tablets]; and follow him: that you may be guided [to the way of the truth.]")
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a to all of Jews, Christians, Sabaeans, idolaters and associaters among the Arab and the non-Arab, and others.
b i.e. He owns the planets including the earth.
See the interpretation of this great aya by Mohammed-Ali Hassan Al-Hilly