I was under the impression that those not knowing of Christ can still be good christians b/c Christ's truths transcend the constraints of the bible.
The individual's subjective relationship to Christ's universal truths set forth in the Sermon on the Mount is what matters here.
Examples:
The Beatitudes
1And seeing the multitudes, He went up on a mountain, and when He was seated His disciples came to Him.
2Then He opened His mouth and taught them, saying:
3"Blessed are the poor in spirit,
For theirs is the kingdom of heaven.
4Blessed are those who mourn,
For they shall be comforted.
5Blessed are the meek,
For they shall inherit the earth.
6Blessed are those who hunger and thirst for righteousness,
For they shall be filled.
7Blessed are the merciful,
For they shall obtain mercy.
8Blessed are the pure in heart,
For they shall see God.
9Blessed are the peacemakers,
For they shall be called sons of God.
10Blessed are those who are persecuted for righteousness' sake,
For theirs is the kingdom of heaven.
11"Blessed are you when they revile and persecute you, and say all kinds of evil against you falsely for My sake. 12Rejoice and be exceedingly glad, for great is your reward in heaven, for so they persecuted the prophets who were before you.
But whoever slaps you on your right cheek, turn the other to him also.
But I say to you, love your enemies, bless those who curse you, do good to those who hate you, and pray for those who spitefully use you and persecute you, 45that you may be sons of your Father in heaven; for He makes His sun rise on the evil and on the good, and sends rain on the just and on the unjust.
But when you do a charitable deed, do not let your left hand know what your right hand is doing, 4that your charitable deed may be in secret; and your Father who sees in secret will Himself reward you openly.
But you, when you pray, go into your room, and when you have shut your door, pray to your Father who is in the secret place; and your Father who sees in secret will reward you openly.