God does not (and cannot) literally change his mind, since the prayers of the faithful are foreknown from eternity, but they are incorporated into his Divine Economy, so that creation may participate in the works of God through spiritual & corporal acts.
If our prayers are foreknown from eternity, maybe I shouldn’t bother with prayer since God knows my intentions?
Is that really cooperating with His grace?
This doesn’t seem to encourage much of a prayer life.
As if the mysterious power of prayer has no effect except that the faithful can feel they are valuable.
That’s like saying our good works don’t produce any fruit that God would have otherwise permitted.
Then what’s the point of prayer if it has no influence?
Don’t let this stop you from praying before the Blessed Sacrament.
God does answer persevering prayer. God does grant miracles.
Christ is quoted several times in the Gospels to petition God.
After Jesus taught them a definite formula of prayer, The Our Father, He told them the parable of the Persistent Friend, teaching us to persevere in our prayers of petition.
Much more then will God who in His goodness bids us make known our requests to Him, and is displeased with those who seek Him not, grant our requests.
LUKE - Chapter 11
[6] Because a friend of mine is come off his journey to me, and I have not what to set before him. [7] And he from within should answer, and say: Trouble me not, the door is now shut, and my children are with me in bed; I cannot rise and give thee. [8] Yet if he shall continue knocking, I say to you, although he will not rise and give him, because he is his friend; yet, because of his importunity, he will rise, and give him as many as he needeth. [9] And I say to you, Ask, and it shall be given you: seek, and you shall find: knock, and it shall be opened to you. [10] For every one that asketh, receiveth; and he that seeketh, findeth; and to him that knocketh, it shall be opened.
For persistent prayer is “violence pleasing to God.”
~Tertullian