β
That is why Samuel Zwemer, groundbreaking missionary to Muslim lands, could utter his famous saying, βPrayer is the gymnasium of the soul.β The idea is not that prayer becomes intrinsically superior and potentially more effective when it is offered up in a frenzy of sweat. Nor is there likely any direct allusion to the account of Jacob wrestling with God (Gen. 32:22β32).2 The idea, rather, is that Paul understands real praying to include an element of struggle, discipline, work, spiritual agonizing against the dark powers of evil. Insofar as the Roman Christians pray this way for Paul, they are joining him in his apostolic struggle.
β
β
D.A. Carson (Praying with Paul: A Call to Spiritual Reformation)