And let us not grow weary of doing good, for in due season we will reap, if we do not give up.
(Galatians 6:9 -- 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. ¹³ 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, ¹⁴ I press on toward the goal for the prize of the upward call of God in Christ Jesus. ¹⁵ Let those of us who are mature think this way, and if in anything you think otherwise, God will reveal that also to you. ¹⁶ Only let us hold true to what we have attained.
(Philippians 3:12-16 -- ESV)