St. Gregory the Wonderworker says the following:

Neither with words would I attempt to speak of this, nor in thought would I dare to approach it, since the Divine Nature is not subject to observation, nor approachable by thought, nor containable by the hapless reasoning. Needful only is to believe in the power of His works. The laws of corporeal nature are evident: a married woman conceives and gives birth to a son in accord with the purpose of marriage; but when the Unwedded Virgin gives birth to the son miraculously, and afterbirth remains a Virgin, — then is manifest and higher corporeal nature. We can comprehend what exists according to the laws of corporeal nature, but afront that which is beyond the laws of nature, we fall silent, not through fear, but more so through sin-wrought fallibility. We must needs fall silent, in silent stillness to reverence virtue with aworthy reverence and, not going beyond the far limits (of word), to be vouchsafed the heavenly gifts.