'Now we are the sons of God'. This is the starting point of adoption. However, 'it does not yet appear what we shall be: but we know that, when He shall appear, we shall be like Him; for we shall see Him as He is' (I Jn. 3:2). This is the perfection of adoption of sons and renewal which God bestowed on us in Christ, and of which John says in his Gospel that, 'Christ gave power to become the sons of God, even to them that believe on His name: which were born, not of blood, nor of the will of the flesh nor of the will of man, but of God' (Jn. 1:12-13).
Gregory PalamasMore Gregory Palamas quotes
Let no one out of laziness or continuous worldly occupations miss these holy Sunday gatherings, which God Himself handed down to us, lest he be justly abandoned by God... If you are detained and do not attend on one occasion, make up for it the next time, bringing yourself to Christ's Church. Otherwise you may remain uncured, suffering from unbelief in your soul because of deeds or words, and failing to approach Christ's surgery to receive... holy healing.
Gregory Palamas