And he told them a parable to the effect that they ought always to pray and not lose heart.  He said, “In a certain city there was a judge who neither feared God nor respected man.  And there was a widow in that city who kept coming to him and saying, ‘Give me justice against my adversary.’  For a while he refused, but afterward he said to himself, ‘Though I neither fear God nor respect man,  yet because this widow keeps bothering me, I will give her justice, so that she will not beat me down by her continual coming.’”  And the Lord said, “Hear what the unrighteous judge says.  And will not God give justice to his elect, who cry to him day and night? Will he delay long over them?  I tell you, he will give justice to them speedily. Nevertheless, when the Son of Man comes, will he find faith on earth?”
(Luke 18:1-8 ESV)
 Not that I have already obtained this or am already perfect, but I press on to make it my own, because Christ Jesus has made me his own.  Brothers, I do not consider that I have made it my own. But one thing I do: forgetting what lies behind and straining forward to what lies ahead,  I press on toward the goal for the prize of the upward call of God in Christ Jesus.  Let those of us who are mature think this way, and if in anything you think otherwise, God will reveal that also to you.  Only let us hold true to what we have attained.
 Brothers, join in imitating me, and keep your eyes on those who walk according to the example you have in us.  For many, of whom I have often told you and now tell you even with tears, walk as enemies of the cross of Christ.  Their end is destruction, their god is their belly, and they glory in their shame, with minds set on earthly things.  But our citizenship is in heaven, and from it we await a Savior, the Lord Jesus Christ,  who will transform our lowly body to be like his glorious body, by the power that enables him even to subject all things to himself.
 Therefore, my brothers, whom I love and long for, my joy and crown, stand firm thus in the Lord, my beloved.
(Philippians 3:12-4:1 ESV)