...God will be 'all in all' (I Cor. 15:28) when we are no longer what we are now, a multiplicity of impulses and emotions, with little or nothing of God in us, but are fully like God , with room for God and God alone. This is the 'maturity' (cf. Col. 1:28) towards which we speed.
Gregory of NazianzusTo all earth's creatures God has given the broad earth, the springs, the rivers and the forests, giving the air to the birds, and the waters to those who live in water, giving abundantly to all the basic needs of life, not as a private possession, not restricted by law, not divided by boundaries, but as common to all, amply and in rich measure.
Gregory of NazianzusLet us become like Christ, since Christ became like us. He assumed the worse that He might give us the better; He became poor that we through His poverty might be rich.
Gregory of NazianzusSuch is the grace and power of baptism; not an overwhelming of the world as of old, but a purification of the sins of each individual, and a complete cleansing from all the bruises and stains of sin. And since we are double-made, I mean of body and soul, and the one part is visible, the other invisible, so the cleansing also is twofold, by water and the Spirit; the one received visibly in the body, the other concurring with it invisibly and apart from the body; the one typical, the other real and cleansing the depths.
Gregory of Nazianzus