The Greek verb anamimnēskō means to remind, to call something to mind, or to cause someone to remember. It occurs about 6 times in the New Testament and is closely connected to the Spirit's ministry as the one who reminds believers of all that Jesus taught (John 14:26 uses the related hupomimnēskō).
Memory and anamnesis (remembrance) are central to biblical theology. The Lord's Supper is explicitly an act of remembrance — 'do this in remembrance of me' (anamnēsis, Luke 22:19; 1 Corinthians 11:24–25). Anamimnēskō appears in 1 Corinthians 4:17 (Timothy coming to 'remind' the Corinthians of Paul's ways), in 2 Corinthians 7:15 (remembering their obedience), and in 2 Timothy 1:6 (Paul reminding Timothy to fan into flame his gift). The Holy Spirit's role is precisely this: to make the past redemptive events present and personally applicable. Spiritual amnesia — forgetting what God has done — is one of the recurring failures in Scripture (Psalm 78; Deuteronomy 8:11).