1 Corinthians 8:7

8:7 But this knowledge is not shared by all. And some, by being accustomed to idols in former times, eat this food as an idol sacrifice, and their conscience, because it is weak, is defiled.

1 Corinthians 8:10

8:10 For if someone weak sees you who possess knowledge dining in an idol’s temple, will not his conscience be “strengthened” ¹  to eat food offered to idols?

[8:10]  ¹ tn Or “built up”; This is the same word used in v. 1b. It is used ironically here: The weak person is “built up” to commit what he regards as sin.