John 3:36 He that believeth on the Son hath everlasting life: and he that believeth not the Son of God shall not see life; but the wrath of God abideth on him.
In the Gospel of John, everything is black or white. There is no gray. There is no middle ground. There is room for in-between. This is from God’s point of view. From our point of view, lots of things are gray because our vision is blurred; we don’t see things sharply and clearly. But with God, it is either eternal life or eternal death, no limbo, no purgatory, no halfway to heaven, no “trying to get there,” no “we’ll see what happens,” no “sometimes I feel like one or the other.” One is either in life or in death. Either one has everlasting life now or he will not see life.
So it is also with faith and unbelief. It is black or white. No gray. One either believes in Jesus or he does not. It is simply: “he that believeth” or “he that believeth not.” For the “having or not having life” depends on the presence of faith, period. It is not a matter of having strong or weak faith, great or a little faith, pure or mixed faith, mountain-moving or mustard seed faith, some doubts or no doubts. Just “he who believes on the Son” has life. This is the promise. We believe it.
So it is also with light and darkness. We have come out of darkness into light. We do not live in a twilight, although it may feel dusky to us. We have limited vision; we see through a glass dimly; it all looks gray. But with faith in Jesus we walk in the light of life. Faith receives the promise.