But be sure to fear the Lord and serve him faithfully with all your heart; consider what great things he has done for you. 1 Samuel 12:24.
“You don’t have to know a lot of things for your life to make a lasting difference in the world. But you do have to know the few great things that matter, perhaps just one, and then be willing to live for them and die for them. The people that make a durable difference in the world are not the people who have mastered many things, but who have been mastered by one great thing.” – John Piper.