Ananeoo appears in Ephesians 4:23: "be renewed in the spirit of your minds." Paul's command is present tense and passive — an ongoing renewal that the believer receives, not merely achieves. This renewal of the nous (mind) is the mechanism of transformation described in Romans 12:2: "be transformed by the renewing of your mind." The Christian life is not static but dynamically renewed — day by day growing into the image of Christ (2 Corinthians 4:16).
Ananeoo combines ana (again/up) and neos (new) — to make new again, to renew by restoration. It describes the spiritual renewal of the inner person, distinct from outer transformation, pointing to a continual process of refreshment in the Spirit.