The story of Hannah praying to conceive a child is a story of persistence in prayer (1 Samuel 1:1-28). Hannah didn't talk back to her rival, Peninnah who made fun of her for being childless; nor her partner, Elkanah who thought he was better for her than 10 sons; nor her priest, Eli who thought she was drunk. Hannah talked to Jehovah Jireh, her great and awesome Provider! And soon Hannah conceived Samuel, one of the greatest prophets who ever lived.
The widow pleading before the unjust judge for justice is another example of persistence paying off (Luke 18:1-8). The widow had to go to a corrupt judge. We can go to our heavenly Father (Ephesians 3:14). The widow was a stranger. We are God's children (John1:12). The widow had no access to the judge. We have constant access to God (Hebrews 10:19). The widow came to the court of law. We come to the throne of grace (Hebrews 4:16). The widow had no lawyer. We have Jesus as our advocate (1 John 2:1). The widow had to wear down the judge before he really listened. We already know that God hears our requests (Psalm 4:3). If this poor woman received what she deserved from a corrupt judge, how much more will we receive from our loving heavenly Father? As Jesus illustrated, persistence pays off. Keep on praying!
Romans 12:12 says, "Rejoice in hope; be patient in affliction; be persistent in prayer."
The prayers of the righteous availeth much!!