Before He humbled Himself, only the angels knew him. After He humbled Himself, all human nature knew Him. You see how His humbling of Himself did not make Him have less but produced countless benefits, countless deeds of virtue, and made His glory shine forth with greater brightness? God wants for nothing and has need of nothing. Yet, when He humbled Himself, He produced such great good, increased His household, and extended His kingdom. Why, then, are you afraid that you will become less if you humble yourself?
St. John Chrysostom
On the Incomprehensible Nature of God. 8.46-47. Taken from: Ancient Christian Commentary on Scripture. Vol: Mark. Intervarsity Press, 2005, p. 143.
But let no man be troubled at the apostles being in such an imperfect state. For not yet was the cross accomplished, not yet the grace of the Spirit given. But if thou wouldest learn their virtue, notice them after these things, and thou wilt see them superior to every passion.
St. John Chrysostom
Homily 65 on Matthew 20, 2,3,4,6. B#54, pp.399-401,403., 4th Century