King James Bible Dictionary

That faculty of the mind, or inborn sense of right and wrong, by which we judge of the moral character of human conduct. It is common to all men. Like all our other faculties, it has been perverted by the Fall (John 16:2; Acts 26:9; Romans 2:15). It is spoken of as "defiled" (Titus 1:15), and "seared" (1 Timothy 4:2). A "conscience void of offence" is to be sought and cultivated (Acts 24:16; Romans 9:1; 2 Corinthians 1:12; 1 Timothy 1:5, 19; 1 Peter 3:21).

General references
Job 15:21; Job 15:24; Job 27:6; Proverbs 20:12; Matthew 6:22-23; Luke 11:33-36; Matthew 5:15-16; Acts 23:1; Acts 24:16; Romans 2:14-15; Romans 7:15-23; Romans 9:1; Romans 14:1-23; 1 Corinthians 8:7; 1 Corinthians 8:9-13; 1 Corinthians 10:27-32; 2 Corinthians 1:12; 2 Corinthians 4:2; 2 Corinthians 5:11; 1 Timothy 1:5; 1 Timothy 1:19; 1 Timothy 3:9; Hebrews 9:14; Hebrews 10:22; Hebrews 13:18; 1 Peter 2:19; 1 Peter 3:16; 1 Peter 3:21; 1 John 3:20-21

Faithful, instances of:

Pharaoh, when he took Abraham's wife for a concubine
Genesis 12:18-19

Abimelech, when he took Isaac's wife for a concubine
Genesis 26:9-11

Jacob, in his care of Laban's property
Genesis 31:39

Joseph, when Potiphar's wife tried to seduce him
Genesis 39:7-12

Nehemiah, in the matter of taxes
Nehemiah 5:15

Daniel, in refusing to eat of the King's meat and wine
Daniel 1:8

Peter, in declaring the whole counsel of God
Acts 4:19-20; Acts 5:29
Honesty; Integrity

Guilty

General references
Job 15:21; Job 15:24; Psalms 51:1-4; Psalms 51:7-14; Psalms 73:21; Proverbs 28:1; Isaiah 59:9-14; Matthew 27:3-5; Mark 6:14; Mark 6:16; Matthew 14:1-2; John 8:9; Acts 2:37; 1 Timothy 4:2; Titus 1:15; Hebrews 9:14; Hebrews 10:26-27

Instances of:

Adam and Eve, after they sinned
Genesis 3:7-8

Jacob, after he defrauded Esau
Genesis 33:1-12

Joseph's brethren
Genesis 42:21; Genesis 44:16

Pharaoh, after the plagues
Exodus 9:27

Micah, after stealing
Judges 17:2

David:

For having cut off Saul's skirt
1 Samuel 24:5

For having numbered the children of Israel
2 Samuel 24:10

For his adultery, and murder of Uriah
Psalms 32:1-11; Psalms 19:38; Psalms 40:11-12; Psalms 19:51

Joab, for numbering Israel
1 Chronicles 21:1-7

The lepers of Samaria
2 Kings 7:8-10

The old prophet of Beth-El
1 Kings 13:29-32

Herod, for beheading John the Baptist
Matthew 14:2; Luke 9:7

Peter, after denying the Lord
Matthew 26:75; Mark 14:72; Luke 22:62

Judas, after betraying the Lord
Matthew 27:3-5

The accusers of the woman taken in adultery
John 8:9

Dead

General references
Proverbs 16:25; Proverbs 30:20; Jeremiah 6:15; Amos 6:1; Amos 6:3-6; John 16:2-3; Romans 1:21-25; Ephesians 4:17-19; 1 Timothy 4:2; Titus 1:15
Blindness,Spiritual

CONSCIENCE, noun [Latin , to know, to be privy to.]

1. Internal or self-knowledge, or judgment of right and wrong; or the faculty, power or principle within us, which decides on the lawfulness or unlawfulness of our own actions and affections, and instantly approves or condemns them. conscience is called by some writers the moral sense, and considered as an original faculty of our nature. Others question the propriety of considering conscience as a distinct faculty or principle. The consider it rather as the general principle of moral approbation or disapprobation, applied to ones own conduct and affections; alledging that our notions of right and wrong are not to be deduced from a single principle or faculty, but from various powers of the understanding and will.

Being convicted by their own conscience they went out one by one. John 8:9.

The conscience manifests itself in the feeling of obligation we experience, which precedes, attends and follows our actions.

CONSCIENCE is first occupied in ascertaining our duty, before we proceed to action; then in judging of our actions when performed.

2. The estimate or determination of conscience; justice; honesty.

What you require cannot, in conscience be deferred.

3. Real sentiment; private thought; truth; as, do you in conscience believe the story?

4. Consciousness; knowledge of our own actions or thought.

The sweetest cordial we receive at last, is conscience of our virtuous actions past.

[This primary sense of the word is nearly, perhaps wholly obsolete.]

5. Knowledge of the actions of others.

6. In ludicrous language, reason or reasonableness.

Half a dozen fools are, in all conscience as many as you should require.

To make conscience or a matter of conscience is to act according to the dictates of conscience or to scruple to act contrary to its dictates.

Court of conscience a court established for the recovery of small debts in London and other trading cities and districts.

General references
Judges 17:2; 2 Kings 12:16; Matthew 27:3-5
Money,Sin

CONSCIENCED, adjective Having conscience.