So this weak brother, for whom Christ died, is destroyed by your knowledge.
11. And thy brother perish Mark how serious an evil it is, that mankind commonly think so little of — that of venturing upon anything with a doubtful or opposing conscience. For the object to which our whole life ought to be directed, is the will of the Lord. This, therefore, is the one thing that vitiates all our actions, when we disregard it.
The apostle, having granted, and indeed confirmed, the opinion of some among the Corinthians, that idols were nothing, proceeds now to show them that their inference from this assumption was not just, namely, that therefore they might go into the idol-temple, and eat of the sacrifices, and feast there with their heathen neighbours.
Commenting on 1 Corinthians 8:7-13
And through thy knowledge,.... These words contain an aggravation of the sin such persons are guilty of, who are the means, by their example, of ensnaring weak minds, and causing them to stumble and fall, even in some sense so as to perish: shall the weak brother perish, for whom Christ died?