12 But when you thus sin against the brethren, and wound their weak conscience, you sin against Christ. 13 Therefore, if food makes my brother stumble, I will never again eat meat, lest I make my brother stumble. (1 Corinthians 8:12–13, NKJV)
Paul has just described imperiling the soul of a Christian with a weak conscience. We have sinned against Christ if, by using our liberty, we embolden a brother with a weak conscience to violate his conscience. A liberty is not our excuse to use it regardless of whether it persuades another to violate his conscience. Paul applied this principle to eating food previously offered to an idol, but the principle continues to have application today. For example, a Jew who is converted to Christ may have a conscience against working on Saturday, not because it is forbidden by Christ, but because his conscience has been trained to be guilty for doing that. If I use my liberty to work on Saturday in a way that emboldens this brother to violate his conscience, then I have sinned against Christ. The solution is for me not to work on Saturday if, by doing so, the weak brother is prompted to violate his conscience. (Remember we are discussing liberties – the right to do something. We are not discussing things Christ has obligated us to do.) Paul would forego eating meat so that his brother would not stumble. Like Paul, we must use our personal liberties in ways so that we do not become stumbling blocks to others.