CategoryArchaic Word / Figurative Term
Modern Equivalentkidneys; inward thoughts and desires.
KJV Word TypeNoun
DefinitionLiterally the kidneys; figuratively, the inner feelings, desires, motives, or hidden thoughts of a person.
Key Verses"I the LORD search the heart, I try the reins." (Jeremiah 17:10)
KJV Usage NoteOften paired with the heart to describe God's knowledge of the inner person.
Common MisunderstandingIt does not refer to horse reins in these passages; it refers to inward parts or inner motives.
EtymologyFrom Old French reins, from Latin renes, meaning "kidneys."