The Greek word “gnosis”

Found about 30 times in the New Testament, the Greek noun “gnosis” meant “wisdom,” “knowledge,” “science,” “doctrine.”

The person who has this understanding “knows the true being of God and his own originally divine being (cf. 2 Cor. 13:5, where Paul ironically is aiming his shafts at gnostic self-knowledge)” (Dictionary of New Testament Theology, 1:402).