Mercy translates several different Hebrew and Greek words, and English quietly flattens them into one general idea of being let off.
In the Old Testament, "mercy" most often stands in for chesed, the word for covenant loyalty that keeps showing up even when the other party has broken faith. It isn't a feeling so much as a decision to stay committed. Alongside it sits racham, tied to the word for womb, carrying the sense of a parent's gut-level tenderness toward someone weak or in trouble. A third word, chanan, is about a superior freely favouring someone who has no claim on them at all. These three get folded into one English word.
In the New Testament, eleos is the main word, and it usually inherits the weight of chesed when Greek writers are echoing the Hebrew scriptures. Oiktirmos leans toward compassion or pity. Splanchnizomai, a verb, describes something closer to being gripped in the gut, and it's used of Jesus more than once. English mercy tends to mean "withholding deserved punishment," which is only part of what any of these words are doing.
Then the LORD passed in front of Moses and called out: “The LORD, the LORD God, is compassionate and gracious, slow to anger, abounding in loving devotion and faithfulness,
God names himself with two mercy-adjacent words, rachum and chanun, in his own self-description.
Have mercy on me, O God, according to Your loving devotion; according to Your great compassion, blot out my transgressions.
David appeals to both chesed and racham in a single verse, two distinct Hebrew words English merges into one plea.
But go and learn what this means: ‘I desire mercy, not sacrifice.’ For I have not come to call the righteous, but sinners.”
Jesus quotes Hosea's chesed, carried into Greek as eleos, showing the word crossing straight from covenant loyalty to gospel mercy.
His mercy extends to those who fear Him, from generation to generation.
Mary's song uses eleos for a mercy stretched across generations, closer to enduring loyalty than a single act of pity.
The King James Version renders chesed as "mercy" well over a hundred times, though it also uses "lovingkindness" in places like the Psalms. Modern translations such as the ESV and NIV often pull chesed toward "steadfast love" or "unfailing love" instead, saving "mercy" more for racham, chanan, and eleos. That shift helps readers see the covenant sense of chesed, but it means two English readers using different translations can miss that they're even looking at the same underlying word.
A popular preaching line says mercy is not getting the punishment you deserve, while grace is getting the blessing you don't deserve. It's a tidy contrast, but it isn't drawn from the actual words. Much of what English calls mercy in the Old Testament is chesed, a term about a promise kept, not a sentence reduced. Reading every occurrence of "mercy" as courtroom leniency misses the covenant loyalty and gut compassion the originals are actually naming.
Tap any word while you read and get its original-language root, its range of meaning, and everywhere else it appears — without leaving the verse.
Then understand every verse. BibleKey is free on iPhone and iPad.
Download on the App StoreFree on iPhone & iPad