The question of whether the Bible teaches eternal security or that believers are “once saved always saved” is not uncommon at all. We might recall Nicodemus—a brilliantly educated Jewish leader—asking Jesus how things related to the new birth and salvation could actually be.1 In a sense, Jesus’s answers were so simple that they seemed to throw Nicodemus for a bit of a loop. But Jesus’s teaching in John 3 is very clear.2
Jesus explains that a person must be reborn “of spirit” (or by the Spirit…