The God who revealed himself was a holy God, and his holiness brought the obligation to every worshipper to be holy too. In his commentary on the Johannine Epistles, A. E. Brooke says: ‘John can conceive of no real knowledge of God which does not issue in obedience.’ Knowledge of God can be proved only by obedience to God; and knowledge of God can be gained only by obedience to God. The biblical scholar C. H. Dodd says: ‘To know God is to experience his love in Christ, and to return that love in
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