Allah U reminds the children of Israel of the miracle of the book which is the Torah. The Furqan here is what is in the Torah that separates between truth and falsehood. This is why the battle of Badr is called Furqan as it separated between truth and falsehood.
So, is the rejection of the children of Israel of all of these blessings due to faith, or worship, or affirmation of what our Prophet Muhammad came with?
And they knew what he r came with is true, but they turned away from this truth. Indeed, Allah has mentioned the description of the Prophet in the Torah but they rejected him.
Allah sent books to His prophets so as to rectify society and guide mankind and to bring them bliss in this world and the hereafter. Hence the divine guidance of Allah U is sent for the rectification of this world and for bliss and success in the hereafter. In the guidance is bliss for humans, in this world and the next.
And this religion does not seek anything other than gifts and goodness and bliss for all of man.