'Conscience' in the Bible

who shew the work of the law written in their hearts, their conscience also bearing witness, and their thoughts accusing or else excusing themselves between themselves;)

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 bearing witness with me in the Holy Spirit,

Wherefore it is necessary to be subject, not only on account of wrath, but also on account of conscience.