You must pray with your might. That does not mean saying your prayers, or sitting gazing about in church or chapel, with eyes wide open, while someone else says them for you. It means fervent, effectual, untiring wrestling with God. It means that grappling with Omnipotence, that clinging to Him, following Him about, so to speak, day and night, as the widow did to the unjust judge, with agonizing pleadings and arguments and entreaties, until answer comes and the end is gained. This kind of prayer be sure the devil and the world and your own indolent, unbelieving nature will oppose. They will pour water on this flame. They will ply you with suggestions and difficulties. They will ask you how you can expect that the plans and purposes and feelings of God can be altered by your prayers. They will talk about impossibilities and predict failures; but, if you mean to succeed, you must shut your ears and eyes to all but what God has said, and hold Him to His own Word: and you cannot do this in any sleepy mood; you cannot be a prevailing Israel unless you wrestle as Jacob wrestled, regardless of time and aught else, save obtaining the blessing sought – that is, you must pray with your might.
– William Booth