Despise (καταφρονειτω). Imperative active third singular of καταφρονεω, old verb, to think down on, to despise (Romans 2:4).
Thy youth (σου της νεοτητος). Genitive case of old word (from νεος) as in Mark 10:20.
Be thou (γινου). Present middle imperative of γινομα. "Keep on becoming thou."
An ensample (τυπος). Old word from τυπτω, a type. Pauline use of the word (1. Thessalonians 1:7; 2. Thessalonians 3:9; Philippians 3:17; Titus 2:7).
To them that believe (των πιστων). Objective genitive.
In word (εν λογω). In conversation as well as in public speech.
In manner of life (εν αναστροφη). "In bearing" (Galatians 1:13; Ephesians 4:22).
In purity (εν αγνεια). Old word from αγνευω (αγνος). Sinlessness of life. Used of a Nazirite (Numbers 6:2; Numbers 6:21). Only here and 1. Timothy 5:2 in N.T.