In his first letter, the apostle John makes a startling remark: “I write these things to you who believe in the name of the Son of God, that you may know that you have eternal life” (1 John 5:13 ESV). John is saying that we can know that we are saved, that we have been regenerated by the Spirit, that all our sins have been forgiven, and that, when we die, we will pass through Heaven’s gates. How can a Christian make such an audacious claim and not be arrogant and self-righteous? After all, those of other religions would blush to make such a boastful proclamation. The answer: because Christianity is utterly unique from every other religion. All other religions say your righteousness — your good works, your piety, the deepness of your spirituality — is what saves you. Sure, God is gracious, but if you do not do enough, pray enough, read enough or participate in spiritual activities enough, there is no hope for you. Christianity, on the other hand, says that we are not saved by our works at all but wholly of grace.