Hinduism has had several incarnations throughout its existence. Classical Hinduism (the most current evolution) started approximately 3,500 years ago. Hinduism teaches that all people have souls and these souls are endlessly reincarnated. The reason for this is karma. Karma is penance for the misdoings of the soul. It is the duty and purpose of the soul to escape the chains of karma by emancipation. There are three paths and requirements for this emancipation:
The Path of Duty
This is the erasure of emotion and self. All is sacrificed for duty. Man walks throughout life serving his family, social, and economic obligations.
The Path of Knowledge
This is the use of meditation and yoga to gain a true, unobtrusive, clear insight to one's relationship with God.
The Path of Devotion
This is a life-long devotion to the worship and service of God. Physical objects are rejected and total subservience and reverence of God are the goal.
Hinduism teaches that the only true reality is one's inner reality. Sin is not looked upon as evil, but rather distraction or pollution that needs to be cleansed.
Buddhism is approximately 2,500 years old. Buddhism differs from Hinduism views in that Buddhism teaches there is no soul. There is no internal reality. Buddhism is an emptying process. The end result is a state of non-being. Buddhism holds four Noble Truths:
Nirvana, the ideal state of Buddhism is achieved when man totally escapes the confines of his mind and ego. When this is achieved, he is freed from the cycle of reincarnation.
Christianity is approximately 2,000 years old. Modern day Christianity does not teach reincarnation yet examples of karma can be found throughout the bible.
In this letter to the Galatians, Paul furthers the Hindu and Buddhist belief that materialism and the flesh lead to corruption, but the nonmaterial leads to eternal life. Sin and evil are conquered through confession, atonement, and repentance.
Islam is approximately 1,400 years old. Islam began with God's creation of the first man Adam. The meaning of Islam is submission and obedience to Allah, the Creator of all. Islam believes in the soul, but not in karma or reincarnation.
Man must resist his urges and temptations and serve only God. Everything than comes from within man is evil. Only Allah is good. Man's evil has rippling consequences that affect everything on the earth. For this reason, all men must serve Allah and only then will widespread good be seen.