Karl Graustein, Growing Up Christian, 2005, p. 208.
Jesus taught us how to pray (Matthew 6:9-13), told us to always pray and not give up (Luke 18:1-8), encourages us to ask, seek, and knock (Matthew 7:7-11), got up early to pray (Mark 1:35), modeled how to pray (John 17:1-26), and in the Garden of Gethsemane prayed in preparation for His arrest and death (Mark 14:32-42). Jesus modeled prayer and expected His followers to pray.
Karl Graustein, Growing Up Christian, 2005, p. 208.