Dictionary entry

νήπιος

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament with Strong's

νήπιος, -α, -ον,

[in LXX chiefly for עוֹלֵל, also for פְּתִי, etc.;]

infant; of children and minors: Mt 21:16(LXX), I Co 13:11, Ga 4:1 (v. Lft., in l.). Metaph., childish, unskilled, simple (Ps 18 (19):8, Pr 1:32, al.): Mt 11:25, Lk 10:21, Ro 2:20, Ga 4:3, Eph 4:14, I Th 2:7 (WH, fox ἤπιοι); opp. to τέλειος, He 5:13; ν. ἐν Χριστῷ, I Co 3:1.†