St. Gregory the Theologian: Our renewal in Christ's Resurrection

 Today  is salvation come unto the world, to that which is visible, and to that which is invisible. Christ is risen from the dead, rise ye with Him. Christ is returned again to himself, return ye. Christ is freed from the tomb, be ye freed from the bond of sin. The gates of hell are opened, and death is destroyed, and the old Adam is put aside, and the New is fulfilled; if any man be in Christ he is a new creature; be ye renewed... The Lord's Passover, the Passover, and again I say the Passover to the honor of the Trinity. This is to us a Feast of feasts and a Solemnity of solemnities.

+St. Gregory the Theologian, from Festal Orations Discourse 45, 1-2.

St. Gregory the Theologian: Remembrance of God

It is more important that we should remember God than that we should breathe: indeed, if one may say so, we should do nothing else besides. I am one of those who approve of the precept that commands us to "meditate day and night" (Ps 1:2; Josh1:8), to tell of the Lord "evening, and morning, and at noon" (Ps 55:17), and to "bless the Lord at all times" (Ps 34:1), or in the words of Moses, "when we lie down, when we rise up, when we walk by the way" (Deut 6:7), or when we do anything else whatever, and by this mindfulness be molded to purity.
+St. Gregory the Theologian, from On God and Christ, The Five Theologian Orations and Two Letters to Cledonius, Oration 27, #4

St. Gregory the Theologian: He was carried in the womb...

He was carried in the womb, (cf Luke 1:31) but acknowledged by a prophet as yet unborn himself, who leaped for joy at the presence of the Word for whose sake he had been created. (Luke 1:41)  He was wrapped in swaddling bands, (Luke 2:7,12) but at the Resurrection He unloosed the swaddling bands of the grave. (cf John 20:6-7) He was laid in a manger, (Luke 2:7,16) but was extolled by angles, disclosed by a star and adored by Magi. (Matt 2:2,7,9-11) ... He was exiled into Egypt, (Matt 2:13-14) but He banished the Egyptian idols, He had "no form or beauty" (Isaiah 53:2) for the Jews, but for David He was, "fairer that the children of men" (Ps 45:2) and on the mount He shines forth, becoming more luminous than the Sun, (Matt 17:2) to reveal the future mystery.
+St. Gregory the Theologian, from 29th Theological Oration, #19, in On God and Christ: The Five Theological Orations and Two Letters to Cledonius.