“For we do not wrestle against flesh and blood, but against the rulers, against the authorities, against the cosmic powers over this present darkness, against the spiritual forces of evil in the heavenly places. Therefore take up the whole armor of God, that you may be able to withstand in the evil day, and having done all, to stand firm…praying at all times in the Spirit, with all prayer and supplication. To that end, keep alert with all perseverance, making supplication for all the saints…” -Ephesians 6:12-13, 18
“Prayer is primarily a wartime walkie-talkie for the church as it advances against the powers of darkness. It is not surprising that prayer malfunctions when we try to make it a domestic intercom to call upstairs for more comforts in the den.” -John Piper via desiringGod on Twitter
Bonus: Listen to one of Piper’s sermons on this same topic here.