Sermon: Luke 11:1 - Lord, Teach Us to Pray. Saying a prayer is a simple thing to do, so simple even a child can do it. But what about sustaining a vibrant life of prayer? For most Christians, prayer is exceedingly difficult, especially when it comes to cultivating a deep, enjoyable prayer life that is consistent over the long term. These struggles are not unique to us. The disciples themselves understood the difficulty of prayer, and they asked the Lord for help. In this sermon on Luke 11:1, we see why the disciples asked Jesus to teach them to pray. This sermon also helps us see our need for the Lord to teach us what it means to pray in the Spirit according to the truth.