παιδεία (-ία, T), -ας, ἡ
(< παιδεύω), [in LXX chiefly for מוּסָר;]
1. the rearing of a child (Æsch.).
2. training, learning, instruction (Plat., al.): Eph 6:4, II Ti 3:16.
3. As in LXX (Pr 3:1115:5, al.), chastening, discipline: He 12:5(LXX), 7, 8, 11.†