Oswald Chambers said, "For the past 300 years men have been pointing out how similar Jesus Christ’s teachings are to other good teachings. We have to remember that Christianity, if it is not a supernatural miracle, is just a sham."
Job 19:25 For I know that my Redeemer lives and He shall stand at last on the earth.
Faith in Jesus Christ, if it is genuine, is the strongest force known to the human race. In fact, it's possible to possess a faith that is, for all practical purposes, invincible.
Invincible faith is not merely the intellectual acceptance of the fact that Jesus is the Son of God. No, the power to withstand great hardship comes from believing that, as the Son of God, Jesus Christ has gained complete victory over every form of evil and injustice. The person who truly believes that will not be defeated by anything that happens in their life.
Toward the end of Revelation we have this description of one of John's visions in Revelation 19:11-16 "Now I saw heaven opened, and behold, a white horse. And He who sat on him was called Faithful and True, and in righteousness He judges and makes war. His eyes were like a flame of fire, and on His head were many crowns. He had a name written that no one knew except Himself. He was clothed with a robe dipped in blood, and His name is called the Word of God. And the armies in heaven, clothed in fine linen, white and clean, followed Him on white horses. Now out of His mouth goes a sharp sword, that with it He should strike the nations. And He Himself will rule them with a rod of iron. He Himself treads the winepress of the fierceness and wrath of Almighty God. And He has on His robe and on His thigh a name written: King of kings and Lord of lords."
Invincible faith comes not from finding a way to be unconquerable within ourselves, but from disciplining our minds to believe in the fact that our King Jesus is unconquerable. It is not possible that He ever was defeated and this truth is well attested by everything that has ever been known about Him. When, in the face of any opposition, we choose to believe that the ultimate victory is His, then we adopt a faith that the devil can do little to vanquish. It is to us that Jesus Christ says in Rev 3:21 "To him who overcomes I will grant to sit with Me on My throne, as I also overcame and sat down with My Father on His throne."