sin not leading to death?

Physical death.

The unrepentant "saints" of 1 Corinthians were sickly, even "slept".

Sins not leading to death: probably singular acts of Christians (unkindness torwards others, agumentative, etc) who are unaware that they are carnal.

Luke 12
47 And that servant, which knew his lord's will, and prepared not himself, neither did according to his will, shall be beaten with many stripes.
48 But he that knew not, and did commit things worthy of stripes, shall be beaten with few stripes. For unto whomsoever much is given, of him shall be much required: and to whom men have committed much, of him they will ask the more.

My opinion of course (except for the Scripture).

HankD

 

What would be examples of sins which DID "lead to death?"

 

In 1 Corinthians Paul says that some of them were coming to the communion table drunk, others were comitting a form of incest. Although he doesn't say which sins were causing them to "sleep", (except for taking communion "unworthily") these seem to me to be among the most likely.

HankD

 

This is historically a tough one! Consider the backdrop of the Joahnnine community. This is a late NT letter. More and more false teachers are beginning to come about. In particular, gnosticism had likely begun to rear its head in the community. This false doctrine is not seen as just wrong - it's evil; the spirit of antichrist according to 1 Jn 4:3.

Consider Mt 18:15. If a brother wrongs us, we are to seek resolution - unless he refuses (paraphrased obviously!). 2 Jn 10 says that if a man has not the doctrine of Christ we should neither receive nor wish Godspeed (paraphrased again). Since the only unforgivable sin is rejection of the Holy Spirit it would seem that the sin unto death is an unrepentent sin. If a believer stumbles, lift him/her up! If a "believer" rejects the truth unrepentently then he/she is no believer!