God: "I looked for someone to take a stand for me, and stand in the gap" (Ezekiel 22:30)
A man who knows that he is saved by believing in Christ does not, when he is baptized, lift his baptism into a saving ordinance. In fact, he is the very best protester against that mistake, because he holds that he has no right to be baptized until he is saved.
In prayer, human impotence casts itself at the feet of divine omnipotence, thus the duty of prayer is not to modify God’s power but to glorify it. We’re not trying to change God's plan, we're just trying to get in line with it.