“The Lord held to this orderly plan in administering the covenant of His mercy: as the day of full revelation approached with the passing of time, the more He increased each day the brightness of its manifestation.
Accordingly, at the beginning when the first promise of salvation was given to Adam (Gen. 3:15) it glowed like a feeble spark.
Then, as it was added to, the light grew in fullness, breaking forth increasingly and shedding its radiance more widely. At last– when all the clouds were dispersed– Christ, the Sun of Righteousness, fully illumined the whole earth.”
–John Calvin, Institutes of the Christian Religion (ed. John T. McNeill; trans. Ford Lewis Battles; vol. 1; The Library of Christian Classics; Louisville, KY: Westminster John Knox Press, 2011), 1: 446. (2.10.20)