The problem of evil is the question of how to reconcile the existence of evil and suffering with an omnipotent, omnibenevolent, and omniscient God. There are currently differing definitions of these concepts. The best known presentation of the problem is attributed to the Greek philosopher Epicurus. It was popularized by David Hume.
In the philosophy of religion, a theodicy is an argument that attempts to resolve the problem of evil that arises when omnipotence, omnibenevolence, and omniscience are all simultaneously ascribed to God. Unlike a defence, which merely tries to demonstrate that the coexistence of God and evil is logically possible, a theodicy additionally provides a framework wherein God's existence is considered plausible. The German philosopher and mathematician Gottfried Leibniz coined the term "theodicy" in 1710 in his work Théodicée, though numerous attempts to resolve the problem of evil had previously been proposed. The British philosopher John Hick traced the history of moral theodicy in his 1966 work Evil and the God of Love, identifying three major traditions:
- the Plotinian theodicy, named after Plotinus
- the Augustinian theodicy, which Hick based on the writings of Augustine of Hippo
- the Irenaean theodicy, which Hick developed, based on the thinking of St. Irenaeus
The omnipotence paradox is a family of paradoxes that arise with some understandings of the term omnipotent. The paradox arises, for example, if one assumes that an omnipotent being has no limits and is capable of realizing any outcome, even a logically contradictory one such as creating a square circle. Atheological arguments based on the omnipotence paradox are sometimes described as evidence for countering theism. Other possible resolutions to the paradox hinge on the definition of omnipotence applied and the nature of God regarding this application and whether omnipotence is directed toward God Himself or outward toward his external surroundings.
An argument from nonbelief is a philosophical argument that asserts an inconsistency between the existence of God and a world in which people fail to recognize him. It is similar to the classic argument from evil in affirming an inconsistency between the world that exists and the world that would exist if God had certain desires combined with the power to see them through.
Misotheism is the "hatred of God" or "hatred of the gods".
The problem of Hell is an ethical problem in the Abrahamic religions of Christianity, Islam and Judaism, in which the existence of Hell (Jahannam) for the punishment of souls in the Afterlife is regarded as inconsistent with the notion of a just, moral, and omnipotent, omnibenevolent, omniscient supreme being. Also regarded as inconsistent with such a just being is the combination of human free will, and the divine qualities of omniscience and omnipotence, as this would mean God would determine everything that has happened and will happen in the universe—including sinful human behavior.
Omnibenevolence is defined by the Oxford English Dictionary as "unlimited or infinite benevolence". Some philosophers have argued that it is impossible, or at least improbable, for a deity to exhibit such a property alongside omniscience and omnipotence, as a result of the problem of evil. However, some philosophers, such as Alvin Plantinga, argue the plausibility of co-existence.
A trilemma is a difficult choice from three options, each of which is unacceptable or unfavourable. There are two logically equivalent ways in which to express a trilemma: it can be expressed as a choice among three unfavourable options, one of which must be chosen, or as a choice among three favourable options, only two of which are possible at the same time.
The existence of God is a subject of debate in theology, the philosophy of religion, and popular culture. A wide variety of arguments for and against the existence of God can be categorized as logical, empirical, metaphysical, subjective or scientific. In philosophical terms, the question of the existence of God involves the disciplines of epistemology and ontology and the theory of value.
The evil demon, also known as Deus deceptor, malicious demon, and evil genius, is an epistemological concept that features prominently in Cartesian philosophy. In the first of his 1641 Meditations on First Philosophy, Descartes imagines that a malevolent God or an evil demon, of "utmost power and cunning has employed all his energies in order to deceive me." This malevolent God or evil demon is imagined to present a complete illusion of an external world, so that Descartes can say, "I shall think that the sky, the air, the earth, colours, shapes, sounds and all external things are merely the delusions of dreams which he has devised to ensnare my judgement. I shall consider myself as not having hands or eyes, or flesh, or blood or senses, but as falsely believing that I have all these things."
The standard problem of evil found in monotheistic religions does not apply to almost all traditions of Hinduism because it does not posit an omniscient, omnipotent, omnibenevolent creator.
The following outline is provided as an overview of and topical guide to atheism:
Alvin Plantinga's free-will defense is a logical argument developed by the American analytic philosopher Alvin Plantinga and published in its final version in his 1977 book God, Freedom, and Evil. Plantinga's argument is a defense against the logical problem of evil as formulated by the philosopher J. L. Mackie beginning in 1955. Mackie's formulation of the logical problem of evil argued that three attributes of God, omniscience, omnipotence, and omnibenevolence, in orthodox Christian theism are logically incompatible with the existence of evil.
An ontological argument is a philosophical argument, made from an ontological basis, that is advanced in support of the existence of God. Such arguments tend to refer to the state of being or existing. More specifically, ontological arguments are commonly conceived a priori in regard to the organization of the universe, whereby, if such organizational structure is true, God must exist.
Skeptical theism is the view that people should remain skeptical of their ability to discern whether their perceptions about evil can be considered good evidence against the existence of the orthodox Christian God. The central thesis of skeptical theism is that it would not be surprising for an infinitely intelligent and knowledgeable being's reasons for permitting evils to be beyond human comprehension. That is, what may seem like pointless evils may be necessary for a greater good or to prevent equal or even greater evils. This central thesis may be argued from a theistic perspective, but is also argued to defend positions of agnosticism.
The Augustinian theodicy, named for the 4th- and 5th-century theologian and philosopher Augustine of Hippo, is a type of Christian theodicy that developed in response to the evidential problem of evil. As such, it attempts to explain the probability of an omnipotent (all-powerful) and omnibenevolent (all-loving) God amid evidence of evil in the world. A number of variations of this kind of theodicy have been proposed throughout history; their similarities were first described by the 20th-century philosopher John Hick, who classified them as "Augustinian". They typically assert that God is perfectly (ideally) good, that he created the world out of nothing, and that evil is the result of humanity's original sin. The entry of evil into the world is generally explained as consequence of original sin and its continued presence due to humans' misuse of free will and concupiscence. God's goodness and benevolence, according to the Augustinian theodicy, remain perfect and without responsibility for evil or suffering.
The evil God challenge is a philosophical thought experiment. The challenge is to explain why an all-good God is more likely than an all-evil God. Those who advance this challenge assert that, unless there is a satisfactory answer to the challenge, there is no reason to accept that God is good or can provide moral guidance.
Religious responses to the problem of evil are concerned with reconciling the existence of evil and suffering with an omnipotent, omnibenevolent, and omniscient God. The problem of evil is acute for monotheistic religions such as Christianity, Islam, and Judaism whose religion is based on such a God. But the question of "why does evil exist?" has also been studied in religions that are non-theistic or polytheistic, such as Buddhism, Hinduism, and Jainism.
The Epicurus paradox is a logical dilemma about the problem of evil attributed to the Greek philosopher Epicurus, who argued against the existence of a god who is simultaneously omniscient, omnipotent and omnibenevolent.
