Two-Way Street

Morse code invented in 1848 is a method of transmitting text information as a series of on-off tones where each letter in the alphabet and number is represented by a unique sequence of dots and dashes. This ancient form of communication became obsolete in 2007. There's another ancient form of communication that is widely used still to this day. It's called prayer. What is prayer? How does it work? What's it used for? This is week 2 of this series.