From the Introduction to A. W. Pink's A Guide to Fervent Prayer we read:
Prayer, a Universal Duty Among Believers
But let it not be thought that this marked emphasis of the Epistles indicates a duty for preachers only. Far from it. These Epistles are addressed to God's children at large, and everything in them is both needed for, and suited to, their Christian walk. Believers, too, should pray much not only for themselves, but for all their brothers and sisters in Christ. We should pray deliberately according to these apostolic models, petitioning for the particular blessings they specify. I have long been convinced there is no better way—no more practical, valuable, and effective way—of expressing solicitude and affection for our fellow saints than by bearing them up before God by prayer in the arms of our faith and love. By studying these prayers in the Epistles and pondering them clause by clause, we may learn more clearly what blessings we should desire for ourselves and for others, that is, the spiritual gifts and graces for which we have great need to be solicitous. The fact that these prayers, inspired by the Holy Spirit, have been placed on permanent record in the Sacred Volume declares that the particular favors sought herein are those which God has given us warrant to seek and to obtain from Himself (Rom.8:26-27; 1 John 5:14-15).