It is now necessary only to accept one Book of guidance, the Holy Quran. Who so ever accepts the Holy Quran accepts the righteous teachings of all the previous scriptures. In any case this is the only revealed Book which is complete and fully preserved. A human role model essential for the teaching of righteousness Allah has appointed an angel within the inner self of every being to guide it towards higher virtues. He has also revealed a Book in which all acts of righteousness are clearly mentioned, along with how they can be acquired, and evil avoided.
Words can, however, be ineffective unless accompanied by a living example.
Allah has, therefore, created the example of the prophets for the guidance of mankind. Every nation considers its prophet as a role model of higher virtues. Details of their noble example are found in scriptures and religious traditions. The Holy Quran also, has highlighted the high moral qualities of these prophets, where ever it has made mention of them. His daily living, sayings and actions are so well preserved that it is not an exaggeration to call him the Living Prophet.