Seeing then that we have a great high Priest… Jesus, the Son of God, let us hold fast our profession. Let us come boldly unto the throne of grace, that we may obtain mercy, and find grace to help in time of need (Hebrews 4:14-16).
Our great Helper in prayer is the Lord Jesus Christ, our Advocate with the Father, our Great High Priest, whose chief ministry for us these centuries has been intercession and prayer. He it is who takes our imperfect petitions from our hands, cleanses them from their defects, corrects their faults, and then claims their answer from His Father on His own account and through His all-atoning merits and righteousness.
Brother, are you fainting in prayer? Look up. Your blessed Advocate has already claimed your answer, and you would grieve and disappoint Him if you were to give up the conflict in the very moment when victory is on its way to meet you. He has gone in for you into the inner chamber, and already holds up your name upon the palms of His hands; and the messenger, which is to bring you your blessing, is now on his way, and the Spirit is only waiting your trust to whisper in your heart the echo of the answer from the throne, "It is done."
--A. B. Simpson
The Spirit has much to do with acceptable prayer, and His work in prayer is too much neglected. He enlightens the mind to see its wants, softens the heart to feel them, quickens our desires after suitable supplies, gives clear views of God's power, wisdom, and grace to relieve us, and stirs up that confidence in His truth which excludes all wavering.
Prayer is, therefore, a wonderful thing. In every acceptable prayer the whole Trinity is concerned.
--J. Angell James