'Conscience' in the Bible

Which was a figure for the time then present, in which were offered both gifts and sacrifices, that could not make him that did the service perfect, as pertaining to the conscience;

How much more shall the blood of Christ, who through the eternal Spirit offered himself without spot to God, purge your conscience from dead works to serve the living God?

For then would they not have ceased to be offered? because that the worshippers once purged should have had no more conscience of sins.

Let us draw near with a true heart in full assurance of faith, having our hearts sprinkled from an evil conscience, and our bodies washed with pure water.

Pray for us: for we trust we have a good conscience, in all things willing to live honestly.