1 Corinthians 8:7
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.
Cross-reference
In 1 Corinthians 8:9, Paul directly applies this principle: exercising freedom can become a stumbling block to the weak conscience introduced here.
1 Corinthians 8:10 illustrates the scenario: a weak conscience emboldened to eat idol food after seeing a knowledgeable believer.
1 Corinthians 10:28 gives practical instruction: if told food is sacrificed, don't eat for the sake of the weak conscience mentioned here.
In 1 Corinthians 10:29, Paul clarifies that it is the other person's conscience, not yours, that matters — building on the weak conscience.
1 Corinthians 10:25 instructs to eat without questioning conscience—directly addressing the same situation as the weak conscience here.
1 Corinthians 6:12 states 'all things are lawful' but not helpful—the same principle applied here to eating food offered to idols.
Romans 14:14 parallels this: nothing is unclean in itself, but for someone who regards it as unclean, it is — same logic of weak conscience.
Romans 14:23 states that eating with doubt is sin, directly echoing the defiled conscience here.
Titus 1:15 states 'to the defiled, nothing is pure'—mirroring the weak conscience defiled by eating food offered to idols.
Exodus 34:15 warns against eating sacrifices offered to idols — the OT background for the issue of idol food here.
Daniel 1:8 shows Daniel refusing defiling food — a parallel example of conscience regarding food, though Daniel's resolve is strong.