conscience

Definition:

The conscience is the part of a person's thinking through which God makes him aware that he is doing something sinful.

God gave people a conscience to help them know the difference between what is right and what is wrong.
A person who obeys God is said to have a "pure" or "clear" or "clean" conscience.
If a person has a "clear conscience" it means that he is not hiding any sin.
If someone ignores their conscience and no longer feels guilty when he sins, this means his conscience is no longer sensitive to what is wrong. The Bible calls this a "seared" conscience, one that is "branded" as if with a hot iron. Such a conscience is also called "insensitive" and "polluted."
Possible ways to translate this term could include, "inner moral guide" or "moral thinking."