'Conscience' in the Bible

Which shew the work of the law written in their hearts, their conscience also bearing witness, and their thoughts the mean while accusing or else excusing one another;)

What shall we say then? is the law sin? Far be the thought. But I had not known sin, unless by law: for I had not had conscience also of lust unless the law had said, Thou shalt not lust;

I say the truth in Christ, I lie not, my conscience also bearing me witness in the Holy Ghost,

Wherefore ye must needs be subject, not only for wrath, but also for conscience sake.

Do not, for the sake of food, tear down the work of God. All things indeed are [ceremonially] clean, but they are wrong for the person who eats and offends [another’s conscience in the process].

It is good [to do the right thing and] not eat meat or drink wine, or do anything that offends your brother and weakens him spiritually.

But he who is uncertain [about eating a particular thing] is condemned if he eats, because he is not acting from faith. Whatever is not from faith is sin [whatever is done with doubt is sinful].