Original sin is Adam’s sin, it would specifically bar him from heaven. He would need to be forgiven to realize his entry into heaven. The sin of Adam is not attributable to you or me. We will not burn in hell because of Adam’s sin, but for our own.
Orthodox always call it the First Sin, and it’s effects were devastating. To
us Original Sin (First Sin) is our wounded nature, actually the effects of the sin, not the sin itself. We need to overcome these effects and defeat them in all occasions of our life experience, there is no wiping these effects away, we will struggle against them.
This makes it hard for us, we are weak and could potentially damn ourselves through our own actions or thoughts, which means we need all the help we can get. The Body of Christ, the
church with her teachings and sacraments, is that help for us.
Following the Holy Fathers, the Orthodox Church holds that when Adam sinned against God, he introduced death to the world. Since all men are born of the same human stock as Adam, all men inherit death. Death means that the life of every human being comes to an end (mortality); but also that death generates in us the passions (anger, hate, lust, greed, etc.), disease and aging.
… In any case, Orthodoxy has always put great stress on “mastery of the passions” through prayer (public worship and private devotions), fasting (self-denial) and voluntary obedience and regular participation in the Eucharist (sometimes called “the Mysteries”). Thus, the
highest form of Christian living (“the supreme philosophy”) is monasticism. Here all human energy is devoted to struggle for perfection.
Father M Azkoul
It is because of our perspective on First Sin that we have not found it necessary to formally speculate on the damnation of infants, or the special conception of Saint Mary, or dung heaps covered in snow.