"For in [Christ] 'all treasures of knowledge and wisdom are hid' (Col. 2:3) with such great abundance and richness that either to hope for or to seek any new addition to these treasures is truly to arouse God's wrath and provoke him against us. It is for us to hunger for, seek, look to, learn, and study Christ alone, until that great day dawns when the Lord will fully manifest the glory of his Kingdom (cf. I Cor. 15:24) and will show himself for us to see him as he is (I John 3:2). And for this reason this age of ours is designated in the Scriptures as 'the last hour' (I John 2:18), the 'last days' (Heb. 1:2), the 'last times' (I Peter 1:20), that no one should delude himself with a vain expectation of some new doctrine or revelation. 'For at many times and in many ways the Heavenly Father formerly spoke through the prophets; but in these last days he has spoken in his beloved Son' (Heb. 1:1-2), who alone can reveal the Father (Luke 10:22); and he has indeed manifested the Father fully, as far as we require, while we now see him in a mirror (I Cor. 13:12)"
-John Calvin in the Institutes of the Christian Religion