“Say: My Lord would not care for you were it not for your prayer.
“Say: My Lord would not care for you were it not for your prayer. 25:77” This means that supplication is the only way of the relation between the servants and their Lord (Allah) and it is the only way commanded by Allah for people to have relation with Him. In other words, all of the supplications narrated form the infallible imams establish relations between the Creator and the creatures. Allah would cut His special favors if there were not these relations established.
40: 60” Doing such a crime by an individual is obnoxious and its insolence is inexplicable so much so that Allah has explicitly announcing that such individuals will be deprived of His favors.
39: 17” A cursory look at these verses reveals two points; one is the exposure to severe punishments in cases where supplication is left aside and the other is getting Allah's special care and favors if supplication is used sincerely.