1 Corinthians 8:12

In such case, not only the weak brother sins by yielding, but the strong who tempted him; and the latter sins directly “against Christ” (for the construction, cf. 1 Corinthians 6:18): “But sinning in this way against the brethren, and inflicting a blow on their conscience while it is weak, you sin against Christ”. τὴν συνείδησιν ἀσθενοῦσαν, not “their weak conscience” (τὴν ἀσθεν.), but “their conscience weak as it is”: how base to strike the weak! τύπτω describes as the violent wrong of the injurer, what is a μόλυσμα. and πρόσκομμα (1 Corinthians 8:7; 1 Corinthians 8:9) in its effect upon the injured. A blow on the conscience shocks and deranges it. For the bearing of such an act on Christ, see Matthew 18:6 ff; Matthew 25:40; Matthew 25:45; also Zechariah 2:8, etc. The principle of union with Christ, which forbids sin against oneself (1 Corinthians 6:15), forbids sin against one's brother.