διάνοια (dianoia) names the mind, understanding, thought, disposition, or inward faculty by which a person perceives and considers. Scripture does not isolate this faculty from worship, desire, conduct, or the heart. Jesus includes the mind in the whole-person command to love God. Ephesians describes understanding darkened through ignorance and hardness of heart, showing that the problem is moral and relational as well as intellectual.
Hebrews quotes the new-covenant promise that God will put His laws into His people’s minds and write them on their hearts. Peter tells believers to prepare their minds for action, remain sober, and set their hope on coming grace. First John says the Son of God gives understanding so that His people may know the One who is true. The noun therefore serves both diagnosis and formation: thought can be proud, hostile, or darkened, yet God addresses it through revelation, covenant renewal, disciplined hope, and knowledge of Christ.
It does not teach that the mind is self-sufficient or that faithful thinking opposes affection, embodiment, or dependence on the Spirit.
Passage contextCanonical synthesis