World Major Religious Belief Systems

Major World Religions
The major world religions like Christianity, Islam, Hinduism, Buddhism, Judaism, and Taoism etc. 
However, an appropriate way to begin is to ask who, what, when, where, and why? 
1. The sacred texts of Christianity are the Old and New Testaments found within the Bible.
The Bible is divided into the Old Testament, also known as the Torah to the Jews, which is sacred to both Jews and Christians, and the New Testament, which is specifically Christian. Protestant, Orthodox, and Catholic Christians all share these texts but may have some differences in their canon. The New Testament is specifically centered around the teachings of Jesus Christ, whom Christians regard as God on Earth. 
2. The sacred texts and written collections of Islam include the Quran, the Hadith, and the Tafsir. 
The Quran is the primary religious text of Islam, believed to be the literal word of God as revealed to the Prophet Muhammad by the angel Gabriel. The Hadith are collections of reports documenting the sayings, actions, and opinions of the Prophet Muhammad. Tafsir is the exegesis or interpretation of the Quran. There are some differences in the compilations of the Hadith and interpretation of the texts between Sunni and Shia Islam.
Sunni and Shia Muslims do refer to some of each other's sacred texts, although the degree of acceptance and interpretation of the texts can differ significantly. While both Sunni and Shia Muslims accept the Quran as the central sacred text, they differ in their acceptance of certain Hadith collections. Sunni Muslims generally do not give the same weight to Shia Hadith collections and vice versa. However, some common ground can be found in the study and interpretation of shared texts.
3. Hinduism has a vast collection of sacred texts and written collections, including the Vedas, Upanishads, Puranas, and more. 
The Vedas are the oldest and most important texts, composed between 1500 and 500 BCE. They consist of four parts: Rigveda, Yajurveda, Samaveda, and Atharvaveda. These texts contain hymns, mantras, rituals, and philosophical discussions. The Upanishads discuss the essence of reality, self, and the universe. Scribes compiled them between 800 and 500 BCE.
The Puranas, composed between 500 CE and 1000 CE, are a genre of religious texts that narrate the universe's history, legends, and myths. The Bhagavad Gita, a part of the Indian epic Mahabharata, is another important Hindu scripture that presents a conversation between Prince Arjuna and the god Krishna on various topics such as duty, action, and devotion.
The major sects of Hinduism, such as Vaishnavism, Shaivism, Shaktism, and Smartism, acknowledge each other's sacred texts. They have different emphases and interpretations of the texts but generally accept their authority. Vaishnavism focuses on the worship of Vishnu, Shaivism on Shiva, Shaktism on the Divine Mother, and Smartism on the worship of multiple deities. Despite their differences, these sects share a common foundation in the Vedas and other sacred texts.
4. Buddhism has various sacred texts, the most important of which are the Tripitaka and the Mahayana Sutras. The Tripitaka is the primary holy text for Theravada Buddhists, while Mahayana Buddhists revere the Mahayana Sutras.
The Tripitaka, or "Three Baskets," is a collection of three sections: the Vinaya Pitaka (monastic rules), the Sutta Pitaka (teachings and discourses), and the Abhidhamma Pitaka (philosophical and psychological analysis). The Mahayana Sutras encompass a vast range of texts, including the Prajnaparamita Sutras (Perfection of Wisdom), the Lotus Sutra, the Avatamsaka Sutra, the Pure Land Sutras, and the Vimalakirti Sutra, among others. There are also other texts in the Vajrayana tradition, such as the Tibetan Book of the Dead, which Vajrayana Buddhists revere.
Major Buddhist sects, such as Theravada and Mahayana, generally respect and study each other's sacred texts to some extent, recognizing their shared roots and the value of diverse perspectives. However, they may prioritize their own core texts and interpret them differently according to their respective traditions and beliefs.
The sacred texts of Buddhism discuss a wide range of topics, including the teachings of the Buddha, ethical conduct, meditation, the nature of reality, the path to enlightenment, and the nature of suffering and its cessation. They also guide monastic life and the community of practitioners.
5. The sacred texts of Judaism primarily include the Hebrew Bible, also known as the Tanakh, and the Talmud. The Tanakh consists of three parts: the Torah (Pentateuch), the Nevi'im (Prophets), and the Ketuvim (Writings). The Talmud is a gathering of rabbinic discussions, interpretations, and laws, which has two main versions: the Babylonian Talmud and the Jerusalem Talmud.
Different Jewish sects, such as Orthodox, Conservative, Reform, and Reconstructionist, generally accept the same sacred texts, although they may interpret them differently. All sects recognize the importance of the Tanakh, while the Talmud is primarily a central text in Orthodox and Conservative Judaism. In some cases, specific mystical or philosophical texts, such as the Zohar, are more prominent within particular movements, like Kabbalah and Hasidic Judaism.
Major Jewish sects generally respect each other's sacred texts, but the degree to which they use and rely on them may vary. For example, while Orthodox Judaism strictly adheres to the interpretations in the Talmud, Reform Judaism may not emphasize the Talmud's legal aspects as much.
The sacred texts discuss a wide range of topics, from religious laws, ethics, and moral teachings to historical narratives, poetry, and prophetic visions. The Torah contains the foundational laws and narratives of Judaism, the Nevi'im recounts the stories of prophets and their messages, and the Ketuvim includes poetic, philosophical, and historical writings.
6. Taoism is an ancient Chinese philosophy and religious tradition that emphasizes living in harmony with the Tao, the natural flow of the universe. Its sacred texts and collections of writings are numerous and varied, reflecting the diversity of Taoist thought and practice. Significant texts include the Tao Te Ching, the Zhuangzi, and the Daozang. Different sects may refer to alternate collections, but these works are generally considered foundational for Taoism. Classical Chinese is the language of the original Tao texts; over time, numerous languages received their translations. 
The Tao Te Ching is the primary text of Taoism, attributed to the legendary sage Lao Tzu. Ancient scholars recorded the oral teachings in written form around the 5th century BCE, and it consists of 81 short chapters. The text is written in Classical Chinese, discussing the nature of the Tao, the art of governing, and the principles of leading a harmonious and virtuous life.
The Zhuangzi, attributed to the philosopher Zhuang Zhou who wrote it around the 5th to 3rd century BCE, is another critical Taoist text. The text contains allegories, anecdotes, and parables, delving into philosophy, the relativity of human values, and the importance of spontaneous and natural living.
information Courtesy different sources