Greek word

kardiognṓstēs

καρδιογνώστης

What it means

a heart-knower

Where it comes from

from kardía (καρδία) and ginṓskō (γινώσκω)

How the King James translates it

hearts2

Every place it appears 2

Acts1:24 15:8

kardiognṓstēs — Greek word meaning “a heart-knower”