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. (ESV)
This is a difficult verse to make sense of. What does it mean that our eating is not from faith? We have to remember the context of this verse. Paul is finishing a section of instruction dealing with those who had differing views on what a Christian was free to eat. Meat sold in the marketplace was first sacrificed to false idols. Should a Christian be permitted to eat such unholy food?
Paul made clear that all things are free for a believer in Jesus Christ to eat (Romans 14:14). Just because it we are free to eat something does not mean that we should. The believers whose conscience made them feel that they should not eat the meat offered to idols should not eat that meat. This is precisely what Paul is talking about in today's verse.
Whoever has doubts...speaks of the one whose conscience is telling them that eating a particular food is ungodly. Paul says here that the one whose conscience tells him that he should not eat a food, if he does eat that food, is violating his own conscience, and therefore is sinning. There is no need to force someone to change their viewpoint. If their conscience will not permit it, don't do it.
I think of various practices that believers have strong opinions on. Each one would appeal to their own conscience as to what is right. There is no need to have everybody agree about what practices should be done. We can agree to love one another. We do not need to make everyone agree with us. If your conscience tells you to leave something alone leave it alone.
Do you have a struggle understanding how some Christians can "get away" with doing things that you cannot? How can you spend more effort focusing on drawing closer to Christ?