“Preach the word; be instant in season, out of season; reprove, rebuke, exhort with all longsuffering and doctrine.”
King James Version (KJV)
4:2 Be instant - Insist on, urge these things in season, out of season - That is, continually, at all times and places. It might be translated, with and without opportunity - Not only when a fair occasion is given: even when there is none, one must be made.
2Ti 4:2 Preach the word. Proclaim the Word, as a herald of Christ. This is implied in the Greek. The Word is the Gospel and its teachings. Nothing else must be preached. The excellence of the Scriptures has just been mentioned (2Ti 3:16,17). These equip the preacher for his work. Be instant in season, out of season. Preach on all occasions. Be urgent in the work.