One God in Three Persons
Christians believe in the Trinity because there is only one God. “Hear, O Israel; the Lord our God is one Lord.” Deuteronomy 6:4. “Before Me there was no god formed, neither shall there be after Me.” Isaiah 44:6
Because the Bible clearly teaches that the Father is God, that the Son is God and that the Holy Spirit is God, Christians are compelled to accept that God is eternally existent in three Persons. The Christian doctrine of the Trinity states that there is only one God, eternally existent in three Persons.
"And declared to be the Son of God with power according to the Spirit of Holiness, by the Resurrection from the dead." Romans 1:4
"But sanctify the Lord God in your hearts, and always be ready to give a defense to everyone who asks you a reason for the hope that is in you, with meekness and fear." 1 Peter 3:15
One of the great Church Fathers, Augustine of Hippo, in Confessions, wrote concerning God: "You have made us for Yourself and our hearts are restless until they find their rest in You."
One of the most famous atheists of the 20th century, British philosopher, Bertrand Russell wrote: "Why I am not a Christian." When he was asked what he would say if it turned out that there was a God after all, Russell replied that he would ask the Almighty: "Why didn't you give us more evidence?"
This prompted a reaction from science teacher and author Ken Poppy that Russell "seems to be positioning himself in case he needs to shift the blame to God for the not being more convincing. (Hmmm. Did he never see a bright moon setting in the blue western sky while the sun rose circular red through the eastern clouds? Did he never hold a newborn baby?)"
“I would never become a Christian! Look at all the hypocrites in the church! Look at all the scandals of tele-evangelists, the Health and Wealth preachers, the Name it! Claim it! Frame it! Hyper-faith prosperity preachers, two-faced frauds and conmen! I don’t want to be part of hypocrisy!”
Humanist and atheist, Bertrand Russell, wrote in Why I am Not a Christian: "Man is the product of ... accidental connections of atoms ... no fire, no heroism, no intensity of thoughts and feeling can preserve an individual life beyond the grave, and ... all the labour of the ages, all the devotion, all the inspiration, all the noonday brightness of human genius are destined to extinction in the vast death of the solar system. The whole temple of man's achievement must inevitably be buried beneath the debris of a universe in ruin. All these things, if not quite beyond dispute, are yet so nearly certain that no philosophy that rejects them can hope to stand. Only within the scaffolding of these truths, only on the firm foundation of unyielding despair can the souls' habitation henceforth be safely built."
“The Lord is not slack concerning His promise, as some count slackness, but is longsuffering toward us, not willing that any should perish but that all should come to Repentance.” 2 Peter 3:9
Oscar Wilde claimed that suffering proved that a good God does not govern the world. If God cannot stop the suffering, then He is not all powerful. If God will not stop the suffering then He cannot be good and loving.
The faulty logic and wrong conclusion evidenced by Oscar Wilde is quite common. Many question God’s goodness, power, or even existence, because of suffering in the world. Poverty, disease, war, natural and man-made disasters – why does God not bring it all to an end?
WHAT IS THE DIFFERENCE BETWEEN CHRISTIANITY AND ALL OTHER RELIGIONS?
The question of why there is evil in the world was never discussed by the ancient philosophers of Egypt, Babylon, Persia, Greece or Rome. They were polytheists who had a pantheon of gods. Evil was the result of conflicts between the gods. For example, the historical account of the war on Troy was reported by the Greeks as the result of jealously and rivalry between three goddesses.
However, with the understanding of a Holy and loving God, which was a Hebrew concept revealed through the prophets of Israel, the question of how there could be evil in the world began to be discussed. The book of Job is the oldest Theodicy that we know of. A Theodicy is a defence of the justice of God in the light of evil in the world. How can evil and suffering exist when God is all powerful and all good?