As reported here:
But SPAN [School of Prayer for All Nations] isn't focused on lectures and notes. Students spend as much time living out what they've learned as they do in class. Large blocks of time are carved out of each day's schedule for prayer. While some is done alone, students are also assigned to small groups of three called "prayer triplets." These groups are given daily prayer assignments, often praying over something that was just taught in class. One evening, students were asked to pray through the night, signing up for 20-minute shifts to provide real-time prayer support for missionaries working in other time zones around the world. ... "It's not a retreat," [Ashley Allen] said. "This is serious Kingdom business that we've been engaged in. A lot of people might say, 'C'mon, they're just praying!' [How serious could it be?] But we've been constantly on our faces before the Father interceding for the lost and for missionaries around the world." ... On their final night together, SPAN students gathered for a unique finale that Fort called the "concert of prayer," two hours of worship and focused prayer. As thunderstorms rumbled outside, the SPAN classroom resonated with the murmur of soft voices lifted to heaven. Some were moved to tears. Others displayed creases of deep concern and concentration on their faces as they asked God to soften hearts to the Gospel. It was an intimate moment with the Father and with each other.
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"And when thou prayest, thou shalt not be as the hypocrites are: for they love to pray standing in the synagogues and in the corners of the streets, that they may be seen of men. Verily I say unto you, They have their reward. But thou, when thou prayest, enter into thy closet, and when thou hast shut thy door, pray to thy Father which is in secret; and thy Father which seeth in secret shall reward thee openly. But when ye pray, use not vain repetitions, as the heathen do: for they think that they shall be heard for their much speaking. Be not ye therefore like unto them: for your Father knoweth what things ye have need of, before ye ask him."
-- Matthew 6:5ff.