Christ indeed could not divest himself of godhead, but he kept it concealed for a time, that it might not be seen, under the weakness of the flesh. Hence he laid aside his glory in the view of men, not by lessening it, but by concealing it.
-John Calvin (1509-1564)
…this is the most profound incognito and the most impenetrable of recognition that can be; for the contrast between God and an isolated individual human being is the greatest possible contrast; it is infinitely qualitative. This, however, is His will, His free will, and therefore it is an incognito maintained by omnipotence.
-Martin Luther (1483-1546)
Veiled in flesh the Godhead see,
Hail the incarnate Deity
Pleased as man with man to dwell
Jesus, our Emmanuel