However prayer, fasting, vigil and all the other Christian practices may be, they do not constitute the aim of our Christian life. Although it is true that they serve as the indispensable means of reaching this end, the true aim of our Christian life consists of the acquisition of the Holy Spirit of God. As for fasts, and vigils, and prayer, and almsgiving, and every good deed done for Christ’s sake, are the only means of acquiring the Holy Spirit of God. Mark my words, only good deeds done for Christ’s sake brings us the fruits of the Holy Spirit. All that is not done for Christ’s sake, even though it be good, brings neither reward in the future life nor the grace of God in this life. That is why our Lord Jesus Christ said: “He who does not gather with Me scatters” (Luke 11:23). Not that a good deed can be called anything but gathering, even though a deed is not done for Christ’s sake, it is still considered good. The Scriptures say: “In every nation he who fears God and does what is right is acceptable to Him” (Acts 10:35).
St. Seraphim of Sarov