You will not know what prayer is . . .

Jeremy Carr quotes John Piper:

You will not know what prayer is for until you know that life is war. One of the great obstacles to praying is that life is just too routinely smooth for many of us. The battlefront is way out there, but here in my tiny bubble of peace and contentment all is well. O may God open our eyes to see and feel the needs around us and great potential of prayer.

The rest here.