1 Corinthians 8:10-12

Young's Literal Translation

¹⁰ for if any one may see thee that hast knowledge in an idol's temple reclining at meat -- shall not his conscience -- he being infirm -- be emboldened to eat the things sacrificed to idols,

¹¹ and the brother who is infirm shall perish by thy knowledge, because of whom Christ died?

¹² and thus sinning in regard to the brethren, and smiting their weak conscience -- in regard to Christ ye sin;