[A]ll of us, with our unveiled faces like mirrors reflecting the glory of the Lord, are being transformed into the image that we reflect in brighter and brighter glory; this is the working of the Lord who is the Spirit. 2 Corinthians 3:18, New Jerusalem Bible.
It is God who said, 'Let light shine out of darkness,' that has come into our hearts to enlighten us with the knowledge of God's glory, the glory on the face of Christ. . . . But we hold this treasure in pots of earthenware, so that the immensity of the power is God's and not our own. We are subjected to every kind of hardship, but never distressed; we see no way out but we never despair; we are pursued but never cut off; knocked down but still have some life in us; always we carry with us in our body the death of Jesus so that the life of Jesus, too, may be visible in our body. 2 Corinthians 4:6-10, New Jerusalem Bible.
[Man] . . . is at the last degree of darkness and at the beginning of light; that is why it has been said that the condition of man is the end of the night and the beginning of day, meaning that he is the sum of all the degrees of imperfection, and that he possesses the degrees of perfection. He has the animal side as well as the angelic side; and the aim of an educator is to so train human souls, that their angelic aspect may overcome their animal side. Then, if the divine power in man, which is his essential perfection, overcomes the satanic power, which is absolute imperfection, he becomes the most excellent among the creatures; but if the satanic power overcomes the divine power, he becomes the lowest of the creatures. That is why he is at the end of imperfection and the beginning of perfection. . . .Baha'u'llah, Gleanings, pp. 108-109.