'Conscience' in the Bible

for this [first or outer tabernacle] is a symbol [that is, an archetype or paradigm] for the present time. Accordingly both gifts and sacrifices are offered which are incapable of perfecting the conscience and renewing the [inner self of the] worshiper.

let us approach [God] with a true and sincere heart in unqualified assurance of faith, having had our hearts sprinkled clean from an evil conscience and our bodies washed with pure water.

Keep praying for us, for we are convinced that we have a good conscience, seeking to conduct ourselves honorably [that is, with moral courage and personal integrity] in all things.