the very essence of our nature is desire

But someone will ask, "Should I not desire dinner? Should I not desire a job? Should I not desire a spouse? Should I not desire the child in my womb? Should I not desire a healthy body or a good night's rest or the morning sun or a great book or an evening with friends?"

And the answer is no—unless it is a desire for GOD! Do you desire dinner because you desire God? Do you want a job because in it you will discover God and love God? Do you long for a spouse because you are hungry for God and hope to see him and love him in your partner? Do you desire the child and the healthy body and the good night's rest and the morning sun and the great book and the evening with friends for God's sake? Do you have an eye for God in everything you desire? (See Colossians 3:17; 1 Corinthians 10:31.)

from john piper.

prayer

We can do no thing of real power until we have done the prayer thing. Here is a man by my side. I can talk to him. I can bring my personality to bear upon him, that I may win him. But before I can influence his will a jot for God, I must first have won the victory in the secret place. Intercession is winning the victory over the chief, and service is taking the field after the chief is driven off. Such service is limited by the limitation of personality in one place. . . . Prayer puts man into direct dynamic touch with a planet.

S. D. Gordon. From the Desiring God blog.

john piper

Marriage is not mainly about prospering economically; it is mainly about displaying the covenant-keeping love between Christ and his church. Knowing Christ is more important than making a living. Treasuring Christ is more important than bearing children. Being united to Christ by faith is a greater source of material success than perfect sex and double-income prosperity.

So it is with marriage. It is a momentary gift. It may last a lifetime, or it may be snatched away on the honeymoon. Either way, it is short. It may have many bright days, or it may be covered with clouds. If we make secondary things primary, we will be embittered at the sorrows we must face. But if we set our face to make of marriage mainly what God designed it to be, no sorrows and no calamities can stand in our way. Every one of them will be, not an obstacle to success, but a way to succeed. The beauty of the covenant-keeping love between Christ and his church shines brightest when nothing but Christ can sustain it.

Radical Womanhood.