It presents strong biblical arguments against the idea of salvation in a moment, however what I really like is that Pop Shenouda do say that there must be turning moments in one's life. Moments like the lost prodigal son when he said in Luke 18:15 "I will arise and go to my father, and will say unto him, Father, I have sinned against heaven, and before thee". After this moment, everything has changed with the son when he returned to his loving father. It is only a small example of such moments from the bible but they all represent moments of repentance, God's grace, true acceptance of Jesus in the heart, or brave decisions to change ways in life but we cannot say they are salvation moments because salvations is the whole journey of life.