Sin and Apostasy

One usually thinks of apostasy as due to an intellectual rejection of the doctrine of the faith.  This can be true.  John (1 John) says that the antichrists who have gone out from us indicate that it is the last hour.  However, in Scripture there are many passages that speak of apostasy, and most of those passages do not speak of intellectual denials, but of moral apostasy.  They speak of sin.

John said that people do not believe, to begin with, because their deeds are evil (John 3:19-20).  Therefore, it stands to reason also that apostasy can come about due to a fundamental heart-preference for sin rather than fellowship with Christ.  This happens in those who have professed allegiance to Christ, but who have not believed the gospel with their whole heart.

In 1 Cor 10, Paul shows that tinkering with sin is the path to apostasy.

¹ Moreover, brethren, I do not want you to be unaware that all our fathers were under the cloud, all passed through the sea, ² all were baptized into Moses in the cloud and in the sea, ³ all ate the same spiritual food, ⁴ and all drank the same spiritual drink. For they drank of that spiritual Rock that followed them, and that Rock was Christ. ⁵ But with most of them God was not well pleased, for their bodies were scattered in the wilderness.

⁶ Now these things became our examples, to the intent that we should not lust after evil things as they also lusted. ⁷ And do not become idolaters as were some of them. As it is written, “The people sat down to eat and drink, and rose up to play.” ⁸ Nor let us commit sexual immorality, as some of them did, and in one day twenty-three thousand fell; ⁹ nor let us tempt Christ, as some of them also tempted, and were destroyed by serpents; ¹⁰ nor complain, as some of them also complained, and were destroyed by the destroyer. ¹¹ Now all these things happened to them as examples, and they were written for our admonition, upon whom the ends of the ages have come.

¹² Therefore let him who thinks he stands take heed lest he fall.

The context shows that the warning is about apostasy on the part of those who have received the sacraments and professed the faith, but who have preferred sin to Christ when the going got tough.  This occurs in this place in 1 Corinthians because the Corinthian laissez-faire attitude toward holiness (as portrayed in their emphasis on enjoyment of rights) is tantamount in Paul's eyes to a threat of apostasy.  He doesn't want to see this, and so he gives the warning.

Now there is also assurance here.  Paul goes on to say that, for those who truly know God,

¹³ No temptation has overtaken you except such as is common to man; but God is faithful, who will not allow you to be tempted beyond what you are able, but with the temptation will also make the way of escape, that you may be able to bear it.

Therefore, for those who truly know the Lord Jesus, we have a secure guarantee that he will not permit us to be tempted in such a way as to cause us to fall away from him.  But, along with this guarantee, and concurrently with it in our own hearts must be respect for the exhortation:

¹⁴ Therefore, my beloved, flee from idolatry.

Sin is characterized as what it really is -- idolatry.  When we flee it and trust in Jesus Christ clothed in the gospel, we know that our Christ will carry us through and not permit us to be lost.