Leonard Ravenhill said this in his book Why Revival Tarries
“No man is greater than his prayer life…Poverty–stricken as the church is today in many things, she is most stricken here, in the place of PRAYER. We have many organizers, but few agonizers; many players and payers, few PRAYERS. The ministry of preaching is open to few; the ministry of PRAYER- the highest ministry of all human offices is open to all."