Eternity is beyond what we can think. When a person thinks of eternity, that individual thinks of something beyond Being-present. Eternity lives in an alien world. That is, every temporal being—every human being—is outside of something that lasts forever. Humanity and the human experience is not eternal. For instance, the person sitting on the chair at the laundromat will cease to exist. Whether this is because the person leaves eyesight, the laundromat, memory, or life, that person ceases to be undoubtedly. Therefore, eternity—that which is beyond the constraints of time—is a realm that we do not experience in our Being-present. Indeed, a present experience of eternity is an oxymoron.
Thinking of eternity, consequently, is thinking of something that we do not experience, something that lies outside of the reach of thinking. Eternity, thus, is something that we have an idea about but no representation; the thought of eternity alienates not Being-human but Being-only-human. Nonetheless, it is remarkable that we can still think of eternity as if it is real. Solomon’s words help here. God “has planted eternity in the human heart, but” we “cannot see the whole scope of God’s work from beginning to end” (Eccles. 3:11). Since the human heart can contain eternity and the human itself is not entirely eternal, there is something inside our temporal bodies containing eternity. Nevertheless, this “container” is not logic or the brain but something much more significant.