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Hi, a question coming from your recent sermon on May 2 about belief and doubt. You were talking about how doubt is held in a sort of middle ground, not to be vilified or esteemed too highly. Today I came across these verses in Romans regarding eating by conscience:
The faith that you have, keep between yourself and God. Blessed is the one who has no reason to pass judgment on himself for what he approves. But whoever has doubts is condemned if he eats, because the eating is not from faith. For whatever does not proceed from faith is sin. (Romans 14:22-23 ESV)
That last sentence feels very strong in that ANYTHING not from faith is sin. How does this relate to the topic on Sunday?
Additionally, where do we draw a line to keep from absurd conclusions about this? When I go on a bike ride for health, I’m not doing it in faith – I just want to keep fit. What about choosing the right date for traveling on vacation? This verse could easily cause a person to stop making decisions due to fear of sin.
The sermon mentioned in this question is from the series The Risen Life, in which we looked at the post-resurrection appearances of Jesus in the Gospels for the season of Eastertide. The sermon was from John 20:19-30 and was called “From Doubt to Belief.”

From Doubt to Belief – White Fields Community Church | A Christian Church in Longmont, Colorado
Doubt and Faith in Romans 14:23
In Romans 14:23, Paul is talking about “gray areas” or “disputable matters” in the Christian life. At that time, some people said that it was acceptable for Christians to eat meat which had been sacrificed to idols, whereas others said that it was not acceptable. Each side had their reasons.
Similar discussions exist today: Is it acceptable for Christians to drink alcohol? To participate in Halloween festivities? To do yoga or martial arts?
In some of these cases, it may be that something may not be categorically wrong, but it may be wrong for a particular person because of their particular propensities. Furthermore, that person may have a strong conviction that they ought not to do something, even if it wouldn’t necessarily be a sin for anyone to do that thing.
Paul is saying that if you have a sincere conviction before God that you should not do something, then you should act on that conviction in faith, and do so as unto the Lord. This, Paul says, honors God. However, if you do something in contradiction to your conviction that you should not do it; i.e. if you have doubts about whether that thing is acceptable or permissible for you to do – then for you to do it anyway would be sin.
Thus, the way doubt and faith is used here is different than in the sense in which we talked about doubt and faith in the above mentioned sermon, where our focus was rather on doubting versus believing in God’s existence, God’s goodness, the validity of God’s Word, or the reliability of God’s promises.
Is Everything that Does Not Proceed from Faith Really Sin?
I believe the answer is: Yes. Let me explain, and I’ll explain how this applies to situations such riding your bike and choosing dates for vacation:
In Hebrews 11:6 we are told that “without faith it is impossible to please God.” In Romans 4:20, faith is correlated with giving glory to God. In 1 Corinthians 10:31 we are told, “whether you eat or drink, or whatever you do, do all to the glory of God.”
The point therefore, is that acting in faith is all about giving glory to God in our actions. If you doubt whether a particular action brings glory to God, then for you to do it anyway would be a sin. It is in this way that anything that does not proceed from faith is sin.
The Question We Often Ask, & the Question We Ought to Ask
I find that too often, we tend to ask the question: “Is it permissible to _________” or “Am I allowed to _________.” What this passage (and others) teach us is that the question we ought to be asking instead is: “Will this action glorify God?” or “Will God be honored, pleased, and glorified through this action?”
If you can do that action in faith so that your motive is to glorify God, then good. If you have doubts about that, then to do it anyway would be sin – at least for you.
This is why Augustine argues that for those who act apart from faith in God, even their virtues can be sinful: because if you do something good – apart from faith in God – your motive in doing so is not to glorify God, but must be either to glorify yourself, or to justify yourself. Thus, even virtuous actions, apart from faith in God, can be sinful. Tim Keller often speaks, quoting the Puritans, of how it is important therefore that we repent not only of our evil actions, but of our good actions done for self-justifying or self-glorifying motives.
May we be those who endeavor to do everything for the glory of God!