The Greek adjective didaktos (διδακτός) means taught, instructed, or what has been imparted by teaching. It can describe either the content taught ('taught things') or persons who have been taught. It appears in John 6:45 (quoting Isaiah 54:13: 'They will all be taught by God') and in 1 Corinthians 2:13 ('not in words taught by human wisdom but in those taught by the Spirit').
John 6:45 is a stunning promise: every person who comes to Jesus has been drawn and taught by the Father. Jesus grounds the possibility of coming to Him in divine teaching — didaktos by God. This means that no one who responds to the gospel does so on the basis of their own cleverness or spiritual intuition; they come because the Father has been teaching them. Paul uses didaktos in 1 Corinthians 2:13 to distinguish Spirit-imparted truth from human philosophical wisdom. The gospel is didaktos by God — not discovered by human reason, but revealed by divine grace. This is the foundation of all Christian learning and conversion.