In the following 3 minute devotional, Puritan Thomas Watson’s words are a collection of similes, metaphors and facts about prayer; the mental pictures his words create will help you see the value of prayer.
The above devotional is from the YouTube site, Christian Sermons and Audiobooks; that site is extremely valuable if you want to listen to great preachers of the past, including Puritans, but also Edwards, Spurgeon…. Such pastors were rich in their understanding of the Bible and its’ doctrines; there are few like them today; but there are some, they can be heard there also.