A. The Plea of a Friend (Luke 11:5-13)
B. The Plea of a Widow (Luke 18:1-8)
C. The Plea of a Sinner (Luke 18:9-14)

See About Parables
A. Parable of Comparison
B. Parable of Contrast
C. Parable of Co-incidence

A. Persistence in Prayer (contrast procrastination)
B. Perseverance in Prayer (contrast passivity)
C. Penitence in Prayer (contrast pride)