1 Corinthians 8 addresses the issue of how we interact with one another when we see things differently. In particular it is when we see that we have freedom in Christ to act in a certain way, whilst another Christian does not feel comfortable in engaging in that same behavior.
In such a situation we need to be careful about how we speak and act towards such a fellow Christian. Our freedom should never be a means for bringing the other brother to stumble in their faith.
Paul reaches the apogee of his argument when he speaks of how the brother you souls stumble is one for whom Christ died (see 1 Cor. 8:11. Christ gave up all of His freedom. That freedom entailed eternally and joyously being in the favour of God and heaven. He relinquished that in order to go to the degradation of the cross. And he did all that in order to bring eternal blessing to your brother.
In view of that won’t I (and won’t you) be very careful about indulging our freedom in Christ. We should always act circumspectly to encourage our brothers and sisters in Christ.
Moreover, the passage continues in 1 Corinthians 8:12 to say: Thus, sinning against your brothers and wounding their conscience when it is weak, you sin against Christ. How serious this all is. When you act to hurt your brother you hurt one who is in the body of Christ. Thereby you hurt Christ.
It is one of those things to have always in our minds in dealing with fellow Christians that they are ones for who Christ died. “One for who Christ died” is the label they wear.