If you do, the Lord will not hear you.
Keep that before you always.
Then trust in God.
Depend only on Him.
Wait on Him.
Believe on Him.
Expect great things from Him.
Faint not if the blessing tarries.
And above all, rely only on the merits of our adorable Lord and Saviour, so that according to them and to nothing of your own, the prayers you offer and the work you do be accepted."
George Mueller
Yet have thou respect unto the prayer of thy servant, and to his supplication,
O LORD my God,
to hearken unto the cry and to the prayer,
which thy servant prayeth before thee to day:
1 Kings 8:28