When Christ-Jesus walked the earth, over two thousand years ago, he established a two-fold division in his teaching that has continued to this day. To the general public, he simplified his teaching and presented it in pictorial, allegorical and figurative imagery in the form of stories, parables and lessons that could be imaginatively and intuitively understood. To his inner circle of disciples (who were sufficiently prepared), however, he taught more plainly and directly in the form of intellectual concepts, clear ideas and logical reasoning that could be understood on a much deeper and wider level of comprehension. As biblically explained: Then the disciples came and said to him, "Why do you speak to them general public] in parables?" And he answered them, "To you it has been given to know the secrets of the kingdom of heaven, but to them it has not been given ... This is why I speak to them in parables, because seeing they do not see, and hearing they do not hear, nor do they understand." (Matt 13:10, 13) Moreover, in union with the divine, Our Saviour was able to reveal sacred knowledge that had never been previously presented in the entire history of mankind: "I will explain mysteries hidden since the creation of the world" (Matt 13:35). This sacred and revealed knowledge has been termed "Christ-mysteries" or "mysteries of the Son." After his glorious resurrection and ascension, Christ-Jesus institutionalized his two-fold mystery-teachings through St. Peter and St. John (the Evangelist, not the apostle). Through St. Peter, Our Saviour instituted a universal, Christian religion and theology to preserve, promote and convey the more basic and simplified mystery-teachings that are intended for the general public. Through St. John, Christ-Jesus instituted a universal, Christian philosophy and theosophy to preserve, promote and convey the more comprehensive and complex mystery-teachings that are intended for the more advanced disciples (Christian initiates). In esoteric terminology, the institutionalized teachings through St. Peter are known as the "lesser mysteries of exoteric Christianity." The institutionalized teachings through St. John are known as the "greater mysteries of esoteric Christianity." While both mystery-teaching approaches are equally sacred, profound and intended to complement each other, corrupt and intolerant authorities within the universal institution (Church) of St. Peter, for many centuries, persecuted and attacked any public expressions of esoteric Christianity. Consequently, genuine historical forms of esoteric Christianity, such as the Knights of the Holy Grail and the Fraternity of the Rose-Cross, were forced to be secretive and publicly-hidden during the past two thousand years. Thankfully today, the social, political and intellectual climate has progressed to the point where the greater mystery-teachings of esoteric Christianity can begin to be publicly revealed for the first time. This modern-day outpouring really began with the twentieth-century establishment of anthroposophy by Rudolf Steiner (1861-1925). The information and approach presented in The Star of Knowledge: The Five Guiding Mysteries of Esoteric Christianity, is intended to augment and continue the mystery-teachings of Christ-Jesus as safeguarded by the Rosicrucian Fraternity and publicized through anthroposophy. Consequently, this particular discourse delves much more deeply and comprehensively into the cosmos-changing, salvational achievement of Christ-Jesus: the historical and cosmic preparations; as well as his birth, life, death, resurrection and ascension. While much of this mystery information may be unfamiliar, unknown and unexpected to mainstream (exoteric) Christianity, it in no way is meant to criticize, denigrate or displace the profound teachings of the universal Church; but rather, to complement, to enhance and to enlarge - for the betterment of true Christianity and, thereby, the betterment of all mankind.