Waiting is hard when you know how long you'll wait. Waiting is near impossible when you don't. Jesus promised his disciples that one day the Son of Man will return and God's justice will reign. But first they must wait. And they don't know how long. Which might lead to great discouragement and doubt. Jesus prepares his disciples for those days with a parable of a persistent widow and an unjust judge. As we await the kingdom, Jesus means to strengthen our hearts from Luke 18:1-8, that upon his return he might find faith on earth.