Though conservative Protestant denominations tend to agree that the answer is yes, this is by no means what all churches believe. See above section on Hell.
From the Orthodox Study Bible:
–The Orthodox view is that unbelievers are judged according to the natural law, the law written on the conscience which every human being has. We are naturally good; to sin is to act against our nature.
–Habitual sins can dull the conscience; the conscience is also the means by which unbelievers can ultimately be saved. The goal is not man’s praise, but pleasing God. This is based on Romans 2:14-16 and 29.
–Also, those of us who are aware of the Mosaic Law (particularly the moral one, which still stands) are also aware that it is impossible to keep it perfectly; it cannot make us righteous.
–We are accountable to both the natural and Mosaic Law. Those who “become righteous by grace through faith fulfill in Christ both the natural and the Mosaic Law” (pp. 341-343, The Orthodox Study Bible).
Jesus Christ’s Parable of the Last Judgment (Matt.25:31-46) indicates that for many people the Judgment will become a moment of insight, recognition and conversion, while for others it may turn out to be a great disappointment and frustration.
Those who were sure of their own salvation will suddenly find themselves condemned, while those who perhaps did not meet Christ in their earthly life (‘when did we see Thee?’) but were merciful towards their neighbour, will be saved.
In this parable, the King does not ask people about matters of belief, doctrine and religious practice. He does not ask them whether they went to church, kept the fasts, or prayed for long time: He only asks them how they treated His ‘brethren’.
The main criteria of the Judgment are therefore the acts of mercy performed or not performed by people during their earthly lives.
According to the teaching of the Church, the Last Judgment will be universal: all people will undergo it, be they believers or non-believers, Christians or non-Christians.
If Christians will be judged by the Gospel’s standards, pagans will be judged by the natural law which is ‘written in their hearts’ (Rom.2:15).
Christians will take full responsibility for their deeds as those who ‘knew’ the will of God, while some non-Christians will be treated less strictly for they did not know God or His will.
The Judgment will ‘begin with the household of the Lord’ (1 Pet.4:17), that is, with the Church and its members, and not with those who did not meet Christ nor hear the message of the Gospel. —The Last Judgment
An Orthodox Christian View of Non-Christian Religions–Rev. Dr. George C. Papademetriou (Greek)
What about other Christians? (OCA)
Will the Heterodox Be Saved?–Archimandrite (Metropolitan) Philaret
The Catholic view:
Salvation Outside the Church
Declaration on the Relation of the Church to Non-Christian Religions–Pope Paul VI
Can people from other faiths be saved?
World Religions: A primer for Catholics
Vatican II for Gen-Xers
Can Non-Christians be Saved?
So, in the Orthodox view, what does it mean that Christ is the “Way, the Truth and the Life”? It does not mean that belief in Christ is the only way to Heaven, or that Christ is a gatekeeper keeping out the unbelievers. (One Orthodox forum poster jokingly referred to this belief as “Bouncer of Heaven.”) Rather, it means that Christ is the Judge of who receives salvation.
How will people be judged if they were not properly taught about Christ? We don’t know. But, as my priest says, we who were properly taught have the responsibility to believe/live the faith, be an example of it, and pray for those who are not Christians.
And how do the Orthodox answer the question, “What’s the point of missions, then, if good Muslims/Hindus/etc. can go to Heaven anyway?”
The point of missions is not to get spiritual notches on your witness belt, or to increase believer counts, or to snatch people out of Hell. Our eternal life begins now, not in Heaven, and here we begin sanctification (“theosis”).
The point of missions is to spiritually feed the church and then the people outside the church, getting them started on theosis right here and now.
“You ask, will the heterodox be saved….Why do you worry about them? They have a Saviour Who desires the salvation of every human being. He will take care of them. You and I should not be burdened with such a concern. Study yourself and your own sins…” –St. Theophan the Recluse
For more on this subject, related to the concept of Christ preaching in Hades, see here.
Index to my theology/church opinion pages:
–End Times and Christian Zionism
–God’s Purpose/Supremacy of God Doctrine
–Cat and Dog Theology
–Raising One’s Hands in Worship
–On the “still, small voice” and Charismatic sign gifts
–On church buildings
–The Message Bible
–The Purpose-Driven Life
–The Relevance Doctrine, i.e. Marketing Churches to Seekers
–The idea that God has someone in mind for you
–Literalism in Biblical interpretation
–Name it and Claim It Doctrine, Prosperity Doctrine, Faith-Formula Theology, Word-Faith Theology, Positive Confession Theology, Health and Wealth Gospel, and whatever else they call it
–More about Pat Robertson
–Dr. Richard Eby and others who claim to have been to Heaven
–Women in Marriage/the Church
–Why do bad things happen?
–Should we criticize our brethren’s artistic or evangelistic attempts? Or, how should we evangelize, then?
–Angels: Is “This Present Darkness” by Frank Peretti a divine revelation or fiction?
–Halloween: Not the Devil’s Holiday!
–Hell and the Nature of God
–Is Christmas/Easter a Pagan Holiday?
–Is everybody going to Hell except Christians?
–How could a loving God who prohibits murder, command the genocide of the Canaanite peoples?
–What about predestination?
–Musings on Sin, Salvation and Discipleship
–An Ancient View which is in the Bible, yet new to the west–Uncreated Energies of God
–Technical Virginity–i.e., how far should a Christian single go?
–Are Spiritual Marriages “real”? (also in “Life” section, where it’s more likely to be updated)
–Does the Pill cause abortions, or is that just another weird Internet or extremist right-wing rumor?
–What about Missional Churches, Simple Churches, Fluid Churches, Organic Churches, House Churches or Neighborhood Churches?
–Is Wine from the Devil–or a Gift from God?
–What is Worship?
–Evangelistic Trips to Already Christianized Countries
–Fraternities, Sororities, Masonic Lodge
–Was Cassie Bernall a Martyr?
–Some Awesome Things heard in the Lamentations Service (Good Friday evening) during Holy Week
Phariseeism in the Church