"Jesus says that there is only one way to develop spiritually, and that is by concentration on God. “Do not bother about being of use to others; believe on Me” — pay attention to the Source, “and out of you will flow rivers of living water.”
We cannot get at the springs of our natural life by common sense and Jesus is teaching that growth in spiritual life does not depend on our watching it, but on concentration on our Father in heaven. Our
heavenly Father knows the circumstances we are in, and if we keep concentrated on Him we will grow spiritually as the lilies."
– Oswald Chambers