1 Corinthians 8:9-11

9Only be careful that this liberty of yours [this power to choose] does not somehow become a stumbling block [that is, a temptation to sin] to the weak [in conscience].

10For if someone sees you, a person having knowledge, eating in an idol’s temple, then if he is weak, will he not be encouraged to eat things sacrificed to idols [and violate his own convictions]?

11For through your knowledge (spiritual maturity) this weak man is ruined [that is, he suffers in his spiritual life], the brother for whom Christ died.