study our bible diligently

diligence¹

ˈdɪlɪdʒ(ə)ns/

noun

1. careful and persistent work or effort.

   "few party members challenge his diligence as an MP"

   synonyms:

   conscientiousness, assiduousness, assiduity, industriousness, rigour,rigorousness, punctiliousness, meticulousness, carefulness, thoroughness,sedulousness, attentiveness, heedfulness, earnestness, intentness,studiousness; More