One thing we haven't talked about ehich I know LG and Hinduism supports, is the idea of different levels of heaven. or different levels to the afterlife.
So in order to get to the lowest level of heaven, you must serve God and please him minimally, not maximally, or optimally.
However, in order to reach the highest or best level of heaven, one must serve God as optimally as possible and choose beliefs which match the truth the closest.
LG, here's some information I got in 5 minutes from some random websites:
Comparison Christianity and Hinduism - What are the differences?
Hinduism is a religion with many beliefs and practices, so offering a comparison of Christianity and Hinduism is challenging. It would be doing Hinduism an injustice to reduce its theology and philosophies to a scope that would be required to truly offer a comparison with Christianity. However, there are some tenets to Hinduism that are universal to all Hindus.
The first difference between Hinduism and Christianity is that Hinduism embraces Christianity as a valid religion whereas the Bible does not. Hinduism is a religion that advocates tolerance. It teaches that all religions are different paths leading to one goal; all religions are different means to one end. Hinduism is not exclusive and accepts all religions as valid. Christianity, however, teaches that Christ is the only way to God. John 14:6 says, "Jesus answered, 'I am the way and the truth and the life. No one comes to the Father except through me.'"
Philosophically, it is impossible for religions with mutually-exclusive doctrines to be equally valid. Where we find contradiction, we must find error. Either Christ was wrong or He was right when He claimed to be the only path to God. It is simple arithmetic, not spiritual elitism.
A comparison between Christianity and Hinduism reveals ancient practices which appear similar. In all ancient religions, Hinduism included, we find reparation for sins being done through sacrifices to an enraged God. In Hinduism and Judaism, this sacrifice is an animal sacrifice. Both theologies preach a divine commandment of righteousness, and failure to comply requires a penalty. This ancient instinct to make reparation for wrong doings suggests that Romans 2:14-15 is true: "Indeed, when Gentiles, who do not have the law, do by nature things required by the law. . .they show that the requirements of the law are written on their hearts, their consciences also bearing witness, and their thoughts now accusing, now even defending them."
The culmination of these sacrifices for sin is found in Christianity. We have all done things we know are wrong. Both Hinduism and Christianity preach a divine commandment of perfect righteousness and that we are held accountable for our actions. The difference is that Christianity preaches the penalty for our sin has already been paid by the death of Jesus Christ on the cross. To become a Christian is to accept the ultimate sacrifice to avoid the ultimate penalty
Source:
http://www.allaboutreligion.org/comparison-christianity-and-hinduism-faq.htm
Comparing Christianity & Hinduism PETER KREEFT
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Kreeft outlines the main theological and practical differences, as well as the important common elements, between Christianity and Hinduism..
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Peter Kreeft
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There are two basic kinds of religions in the world: Eastern and Western.
The main differences between Hinduism and Christianity are typical of the differences between Eastern and Western religions in general. Here are some examples:
1. Hinduism is pantheistic, not theistic. The doctrine that God created the world out of nothing rather than emanating it out of His own substance or merely shaping some pre-existing material is an idea that simply never occurred to anyone but the Jews and those who learned it from them. Everyone else either thought of the gods as part of the world (paganism) or the world as part of God (pantheism).
2. If God is in everything, God is in both good and evil. But then there is no absolute morality, no divine law, no divine will discriminating good and evil. In Hinduism, morality is practical; its end is to purify the soul from desires so that it can attain mystical consciousness. Again, the Jews are unique in identifying the source of morality with the object of religion. Everyone has two innate senses: the religious sense to worship, and the moral sense of conscience; but only the Jewish God is the focus of both. Only the God of the Bible is absolutely righteous.
3. Eastern religions come from private mystical experiences; Western religions come from public revelations recorded in a book and summarized in a creed. In the East, human experience validates the Scriptures; in the West, Scripture judges experience.
4. Eastern religions are esoteric, understandable only from within by the few who share the experience. Western religions are esoteric, public, democratic, open to all. In Hinduism there are many levels of truth: polytheism, sacred cows and reincarnation for the masses; monotheism (or monism) for the mystics, who declare the individual soul one with Brahman (God) and beyond reincarnation (“Brahman is the only reincarnator”). Truth is relative to the level of experience.
5. Individuality is illusion according to Eastern mysticism. Not that we're not real, but that we are not distinct from God or each other. Christianity tells you to love your neighbors; Hinduism tells you you are your neighbors. The word spoken by God Himself as His own essential name, the word “I,” is the ultimate illusion, not the ultimate reality, according to the East. There Is no separate ego. All is one.
6. Since individuality is illusion, so is free will. If free will is illusion, so is sin. And if sin is illusion, so is hell. Perhaps the strongest attraction of Eastern religions is in their denial of sin, guilt and hell.
7. Thus the two essential points of Christianity — sin and salvation — are both missing in the East. If there is no sin, no salvation is needed, only enlightenment. We need not be born again; rather, we must merely wake up to our innate divinity. If I am part of God. I can never really be alienated from God by sin.
8. Body, matter, history and time itself are not independently real, according to Hinduism. Mystical experience lifts the spirit out of time and the world. In contrast, Judaism and Christianity are essentially news, events in time: creation, providence, prophets, Messiah, incarnation, death and, resurrection, ascension, second coming. Incarnation and New Birth are eternity dramatically entering time. Eastern religions are not dramatic.
9. The ultimate Hindu ideal is not sanctity but mysticism. Sanctity is fundamentally a matter of the will: willing God's will, loving God and neighbor. Mysticism is fundamentally a matter of intellect, intuition, consciousness. This fits the Eastern picture of God as consciousness — not will, not lawgiver.
When C.S. Lewis was converted from atheism, he shopped around in the world's religious supermarket and narrowed his choice down to Hinduism or Christianity. Religions are like soups, he said. Some, like consomme, are thin and clear (Unitarianism, Confucianism, modern Judaism); others, like minestrone, are thick and dark (paganism, “mystery religions”). Only Hinduism and Christianity are both “thin” (philosophical) and “thick” (sacramental and mysterious). But Hinduism is really two religions: “thick” for the masses, “thin” for the sages. Only Christianity is both.
Hinduism claims that all other religions are yogas: ways, deeds, paths. Christianity is a form of bhakti yoga (yoga for emotional types and lovers). There is also jnana yoga (yoga for intellectuals), raja yoga (yoga for experimenters), karma yoga (yoga for workers, practical people) and hatha yoga (the physical preliminary to the other four). For Hindus, religions are human roads up the divine mountain to enlightenment — religion is relative to human need; there is no “one way” or single objective truth.
There is, however, a universal subjective truth about human nature: It has “four wants”: pleasure, power, altruism and enlightenment. Hinduism encourages us to try all four paths, confident that only the fourth brings fulfillment. If there is reincarnation and if there is no hell, Hindus can afford to be patient and to learn the long, hard way: by experience rather than by faith and revelation.
Hindus are hard to dialogue with for the opposite reason Moslems are: Moslems are very intolerant, Hindus are very tolerant. Nothing is false; everything is true in a way.
The summit of Hinduism is the mystical experience, called mukti, or moksha: “liberation” from the illusion of finitude, realization that tat tvam asi, “thou art That (Brahman].” At the center of your being is not individual ego but Atman, universal self which is identical with Brahman, the All.
This sounds like the most absurd and blasphemous thing one could say: that I am God. But it is not that I, John Smith, am God the Father Almighty. Atman is not ego and Brahman is not God the Father. Hinduism identifies not the immanent human self with the transcendent divine self but the transcendent human self with the immanent divine self. It is not Christianity. But neither is it idiocy.
Martin Buber, in “I and Thou,” suggests that Hindu mysticism is the profound experience of the “original pre-biographical unity” of the self, beneath all forms and contents brought to it by experience, but confused with God. Even Aristotle said that “the soul is, in a way, all things.” Hinduism construes this “way” as identity, or inclusion, rather than knowing: being all things substantially rather than mentally. The soul is a mirror for the whole world.
Source:
http://www.catholiceducation.org/articles/apologetics/ap0008.html