What is eternity?
In short: Eternity is not time that never stops. It is an entirely different way of existing — a fullness of God's presence, beyond hours and years. And it begins right now, in how we choose to love.
The Orthodox nuance
We live inside time. Everything around us begins and ends: a day, a season, a life. That is why it is so hard for us to imagine something "eternal" — we usually picture it as time going on forever, a line without end. But in the Orthodox faith, eternity is not a large amount of time. It is another way of being.
God did not enter time — He made it. Saint Maximus the Confessor shows that God is beyond time and the ages: His eternity is not measured in hours and years, but is a fullness, a present that does not pass. So the question "how long does eternity last?" is a bit like asking what colour a sound has — we have mixed two worlds that are not measured in the same way.
But often, behind this question, a deeper one hides: the fear of being far from God, far from His love. And here, something essential must be understood. God's love is everywhere and does not change. For the one who has learned to receive it, His presence is light and joy. For the one who has hardened and refused it, that same love is experienced as a burning. Saint Isaac the Syrian says that those in Gehenna are "scourged by the lash of love" — not because God has stopped loving, but because their heart can no longer receive that love.
But this does not mean there is no real judgement, or that everything comes down to a mere feeling. Scripture speaks clearly of judgement: the rich man and Lazarus (Luke 16), the separation of the sheep and the goats (Matthew 25). The Church holds together two truths that our minds would like to simplify: the source is God's unchanging love, and we, being free, choose how we receive it. This is why she guards us equally from presumption ("I am saved anyway") and from despair ("I am lost anyway").
And one more thing. The very fear of being far from God is already a sign that your soul is turned toward Him. The answer to this fear is not anxiety, but the beginning: draw near and love right now. Eternity is not only "later" — it is prepared in how we love today. And God's mercy is infinite — but it is a mercy that meets a heart that seeks Him.
Sources
- Saint Maximus the Confessor — on eternity as fullness beyond time (Ambigua, Theological Chapters).
- Saint Isaac the Syrian — "Ascetical Homilies": God's love as a fire that enlightens or burns.
- Holy Scripture — Luke 16:19-31 (the rich man and Lazarus); Matthew 25:31-46 (the judgement).