} قُلْ يَا أَهْلَ الْكِتَابِ تَعَالَوْا إِلَى كَلِمَةٍ سَوَاءٍ بَيْنَنَا وَبَيْنَكُمْ أَلاَّ نَعْبُدَ إِلاَّ اللَّهَ
وَلا نُشْرِكَ بِهِ شَيْئاً وَلا يَتَّخِذَ بَعْضُنَا بَعْضاً أَرْبَاباً مِنْ دُونِ اللَّهِ فَإِنْ تَوَلَّوْا فَقُولُوا اشْهَدُوا بِأَنَّا مُسْلِمُونَ{ (64 آل عمران)
Say, "O People of the Scripture, come to a word that is equitable between us and you - that we will not worship except Allah and not associate anything with Him and not take one another as lords instead of Allah ." But if they turn away, then say, "Bear witness that we are Muslims [submitting to Him]."
Islam was invited to Pure monotheism
which doesn't have Entrapped in God Never
That is why God sent prophets ، To remove people from the worship of the people to worship the Lord of the people ، Alone is not a partner
And Pure monotheism can't be achieved Without deny And assertion: deny all things that are worshipped instead of Allah and assertion that all kinds of worship are for Allah alone
فقال الله عز وجل }فَاعْلَمْ أَنَّهُ لَا إِلَهَ إِلَّا اللَّهُ{ (19 محمد)
So know, [O Muhammad], that there is no deity except Allah
وقال رسوله (حَقّ الله عَلَى الْعِبَادِ أَنْ يَعْبُدُوهُ وَلاَ يُشْرِكُوا بِهِ شَيْئا)
Allah's Right upon His slaves is that they should worship Him Alone and associate nothing with Him
Isn't enough to assertion worshipped to god (Allah)
But necessary deny any partner from God

And keeps the PARTNER‏ PARTNER‏ Even if different shape
The Slaughter and the Prayer and the Fasting (worship) to Anything beside God ،،،،،The belief that God solution in creatures ،،،،، the Ideas Contrary to the mind Like saying that
God had a human son whom He sacrificed to atone for the sins of humanity ، Making God similar or peer ، Seek forgiveness and repentance from any things beside God
}اتَّخَذُوا أَحْبَارَهُمْ وَرُهْبَانَهُمْ أَرْبَابًا مِنْ دُونِ اللَّهِ وَالْمَسِيحَ ابْنَ مَرْيَمَ وَمَا أُمِرُوا إِلَّا لِيَعْبُدُوا إِلَهًا وَاحِدًا لا إِلَهَ إِلَّا هُوَ سُبْحَانَهُ عَمَّا يُشْرِكُونَ{(31التوبة)
They have taken their scholars and monks as lords besides Allah , and [also] the Messiah, the son of Mary. And they were not commanded except to worship one God; there is no deity except Him. Exalted is He above whatever they associate with Him.