Monotheism and rejection of polytheism

قَالَ لَا يَأْتِيكُمَا طَعَامٌ تُرْزَقَانِهِۦٓ إِلَّا نَبَّأْتُكُمَا بِتَأْوِيلِهِۦ قَبْلَ أَن يَأْتِيَكُمَا ۚ ذَٰلِكُمَا مِمَّا عَلَّمَنِى رَبِّىٓ ۚ إِنِّى تَرَكْتُ مِلَّةَ قَوْمٍ لَّا يُؤْمِنُونَ بِٱللَّهِ وَهُم بِٱلْـَٔاخِرَةِ هُمْ كَـٰفِرُونَ

He said, "You will not receive food that is provided to you except that I will inform you of its interpretation before it comes to you. That is from what my Lord has taught me. Indeed, I have left the religion of a people who do not believe in Allāh, and they, in the Hereafter, are disbelievers.

قُلْ هَـٰذِهِۦ سَبِيلِىٓ أَدْعُوٓا۟ إِلَى ٱللَّهِ ۚ عَلَىٰ بَصِيرَةٍ أَنَا۠ وَمَنِ ٱتَّبَعَنِى ۖ وَسُبْحَـٰنَ ٱللَّهِ وَمَآ أَنَا۠ مِنَ ٱلْمُشْرِكِينَ

Say, "This is my way; I invite to Allāh with insight, I and those who follow me. And exalted is Allāh; and I am not of those who associate others with Him."