The theological task also calls for humility. Full comprehension is impossible; wonder and mystery always remain. This must not be identified with the New Testament notion of mystery, which refers to that which was unknown but has now been revealed in the history of salvation culminating in Christ. Neither is it a secret gnosis available only to an elite, nor is it unknown because of the great divide between the natural and the supernatural. The divide is not so much metaphysical as it is spiritual–sin is the barrier. The wonder of God’s love may not be fully comprehended by believers in this age, but what is known in part and seen in part is known and seen. In faithful wonder the believer is not conscious of living in the face of mystery that surpasses reason and thus it is not an intellectual burden. Rather, in the joy of God’s grace there is intellectual liberation. Faith turns to wonder; knowledge terminates in adoration; and confession becomes a song of praise and thanksgiving. Faith is the knowledge which is life, “eternal life” (John 17:3).
Reformed Dogmatics Vol. 1: Prolegomena (Grand Rapids, Michigan; Baker Academic; 2003) p. 602.