Biblical Word Etymology
The Etymology of “Conscience”
The biblical word “Conscience” traces back to Greek (syneidesis (Greek)), where it meant “Inner moral awareness, knowledge of right and wrong; witness within the heart”. Across 3eras it evolved into the modern sense: “The inner sense of right and wrong; moral consciousness and responsibility”.
How the Meaning Evolved
Ancient Hebrew/Greek
Greeksyneidesis (Greek)Inner moral awareness, knowledge of right and wrong; witness within the heart
Greek syneidesis (G4893) means 'conscience, awareness'. From syn- (together) + eidos (knowledge). Paul uses it extensively (Romans 2:15, 1 Corinthians 8:7-10) as moral witness within.
Medieval Latin / Church
LatinconscientiaThe faculty of moral judgment; the voice of God within the soul guiding right action
Latin conscientia (con- with + scientia, knowledge) means 'conscience, moral awareness'. Church fathers and Aquinas: conscience as application of universal moral law to individual acts.
Modern English
EnglishconscienceThe inner sense of right and wrong; moral consciousness and responsibility
From Latin via Old French c.1200. Philosophical and religious term for inner moral compass. Key to concepts of moral freedom and personal responsibility.