Charles Bridges (1794-1869) speaks to pastors about the need for revival in prayer, based on Acts 6:4 “We will give ourselves continually to prayer, and to the ministry of the word.” He wrote:
Prayer is one half of our Ministry; and it gives to the other half all its power and success. It is the appointed medium of receiving spiritual communications for the instruction of our people. Those who walk most closely with God are most spiritually intelligent in “the secret of his covenant.” Living near to the fountain-head of influence, we shall be in the constant receipt of fresh supplies of light, support, and consolation- to assist us in our duties, to enable us for our difficulties, and to assure us of our present acceptance, and a suitable measure of ultimate success.
(Beeke, Joel. Taking Hold of God: Reformed and Puritan Perspectives on Prayer, p. 228)