Disciples of Jesus need to learn how to pray. And learning to pray is not like many of the other things we learn to do in our lives. Once we know how to write our name, tie our shoes, or ride a bike, the learning is done. There is virtually no danger we will forget how to do those things. Not so with prayer. Learning to pray consists of a lifetime of persistence. So, what is the cause of persistent prayer? The precious promises of God. “God is not human, that he should lie. . . . Does he promise and not fulfill?” (Numbers 23:19). God cannot lie. So, we know every promise he makes us—to forgive, to provide, to help, to be with us—he must keep. When we persistently go to God in prayer and press him to keep his promises, God does not view that as nagging. He loves it! Because it demonstrates that our faith grasps not only that he can do what we ask, but that he will . . . because he promised.