NET
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.
Darby
7 But knowledge [is] not in all: but some, with conscience of the idol, until now eat as of a thing sacrificed to idols; and their conscience, being weak, is defiled.
KJV
7 Howbeit [there is] not in every man that knowledge: for some with conscience of the idol unto this hour eat [it] as a thing offered unto an idol; and their conscience being weak is defiled.