From G1987 (epistamai, to know/understand). One who possesses understanding โ an expert, a person of knowledge and skill. The root of the English word 'epistemology' (the study of knowledge). Used only in James 3:13.
James 3:13 asks: 'Who is a wise man and endued with knowledge (epistemon) among you? let him shew out of a good conversation his works with meekness of wisdom.' The challenge is direct: true epistemon status is not demonstrated by what you know but by how you live. The 'meekness of wisdom' is the hallmark of genuine knowledge. James contrasts this with 'earthly, sensual, devilish' wisdom that produces envy and strife (3:14-15). The theological insight: knowledge without humility is not wisdom but arrogance. True understanding always produces gentleness, not pride.