If I believed that this present life were just a brief test to determine whether I would be admitted after death to another life of eternal bliss, it is inconceivable to me that I would ever commit a sin, since it would simply be foolish. Yet I hear Christians all the time say that they were ‘weak’ or ‘tempted’ on a given occasion to sin, and so did so, thus jeopardizing their own rational best interest in enjoying infinite bliss for the sake of a brief moment of trivial indiscretion. But since sane people are never tempted to bend down and touch the third rail of a subway because they are tempted by a piece of candy they spot lying there, I would assume that no sane Christian would ever be tempted to sin. Since they so often do sin, however, demonstrates that they don’t really believe in the doctrine they profess.
Similarly, if I believed that my present life were just a brief test prior to a possibly infinite afterlife of heavenly bliss, nothing that goes wrong here could ever seriously bother me. If we were all at a giant garden party given by God, and he imposed a forfeit on someone and made him blind for the duration of the party prior to admission to Heaven at the end of the afternoon, that blindness would be no more distressing than being ‘it’ for a little while in a schoolyard game of tag. So the fact that Christians wail in despair when some serious but mundane tragedy ruins only this life for them makes me again suspect that they don’t really believe what they profess.
I do imagine that Christians seriously think that they believe, but this is only because they have never seriously examined the incongruities of their behavior in the situations I have sketched above.
Well, the fact is, us humans are weak creatures and are sometimes easily tempted by the devil to commit sin. All of us fall. The only two humans I know of to have ever been conceived without sin and to live without sin are Mary and Jesus.
We know that the law is spiritual; but I am carnal, sold into slavery to sin. What I do, I do not understand. For I do not do what I want, but I do what I hate. Now if I do what I do not want, I concur that the law is good. So now it is no longer I who do it, but sin that dwells in me. For I know that good does not dwell in me, that is, in my flesh. The willing is ready at hand, but doing the good is not. For I do not do the good I want, but I do the evil I do not want. Now if (I) do what I do not want, it is no longer I who do it, but sin that dwells in me. So, then, I discover the principle that when I want to do right, evil is at hand. For I take delight in the law of God, in my inner self, but I see in my members another principle at war with the law of my mind, taking me captive to the law of sin that dwells in my members.
(Romans 7:14-23 NAB-A)
Do not deprive each other, except perhaps by mutual consent for a time, to be free for prayer, but then return to one another, so that Satan may not tempt you through your lack of self-control.
(1 Corinthians 7:5 NAB-A)
Put on the armor of God so that you may be able to stand firm against the tactics of the devil. For our struggle is not with flesh and blood but with the principalities, with the powers, with the world rulers of this present darkness, with the evil spirits in the heavens. Therefore, put on the armor of God, that you may be able to resist on the evil day and, having done everything, to hold your ground. So stand fast with your loins girded in truth, clothed with righteousness as a breastplate, and your feet shod in readiness for the gospel of peace. In all circumstances, hold faith as a shield, to quench all (the) flaming arrows of the evil one. And take the helmet of salvation and the sword of the Spirit, which is the word of God. With all prayer and supplication, pray at every opportunity in the Spirit. To that end, be watchful with all perseverance and supplication for all the holy ones and also for me, that speech may be given me to open my mouth, to make known with boldness the mystery of the gospel for which I am an ambassador in chains, so that I may have the courage to speak as I must.
(Ephesians 6:11-20 NAB-A)
For this reason, when I too could bear it no longer, I sent to learn about your faith, for fear that somehow the tempter had put you to the test and our toil might come to nothing.
(1 Thessalonians 3:5 NAB-A)
You have followed my teaching, way of life, purpose, faith, patience, love, endurance, persecutions, and sufferings, such as happened to me in Antioch, Iconium, and Lystra, persecutions that I endured. Yet from all these things the Lord delivered me. In fact, all who want to live religiously in Christ Jesus will be persecuted. But wicked people and charlatans will go from bad to worse, deceivers and deceived. But you, remain faithful to what you have learned and believed, because you know from whom you learned it, and that from infancy you have known (the) sacred scriptures, which are capable of giving you wisdom for salvation through faith in Christ Jesus.
(2 Timothy 3:10-15 NAB-A)
Beloved, I urge you as aliens and sojourners to keep away from worldly desires that wage war against the soul.
(1 Peter 2:11 NAB-A)
Be sober and vigilant. Your opponent the devil is prowling around like a roaring lion looking for (someone) to devour. Resist him, steadfast in faith, knowing that your fellow believers throughout the world undergo the same sufferings.
(1 Peter 5:8-9 NAB-A)