Pope Shenouda III
 
Prostration may be a form of  self-abasement before God.
  Every  prostration, man rebukes himself  before God for on of his sins and asks  for forgiveness, saying: I have  sinned, O Lord, in doing this or that,  so please forgive me. I have  desecrated Your temple, so please forgive  me. Forgive me, for I am lazy,  negligent.... etc.
  Prostration may be accompanied by prayers  of gratitude and praise.
 Spiritual preliminaries, such as  self-examination or any spiritual reading to soften the heart, may  precede prostration.