1 Corinthians 8:7, 10, 11, 12

But not everyone possesses this knowledge. Some people are still so accustomed to idols that when they eat sacrificial food they think of it as having been sacrificed to a god, and since their conscience is weak, it is defiled.

For if someone with a weak conscience sees you, with all your knowledge, eating in an idol’s temple, won’t that person be emboldened to eat what is sacrificed to idols?

So this weak brother or sister, for whom Christ died, is destroyed by your knowledge.

When you sin against them in this way and wound their weak conscience, you sin against Christ.