Be diligent in these things. Give yourself wholly to them, that your progress may be revealed to all.
(81) “Ταῦτα μελέτα, meaning, ‘Exercise thyself in these things, make them thy perpetual care and study;’ both this and the next phrase, (ἐν τούτοις ἴσθι,) being, in the best writers, used of diligent attention.” Bloomfield. 