Gene R. Cook wrote:
The most important thing we can do as we seek to communicate with our Heavenly Father is to have faith in Jesus Christ. If we have faith in Jesus Christ, we will have faith in our Father in Heaven, because Christ so clearly testified of him.
Some people think of faith as a positive attitude. That’s only a small part of what faith really is. Faith is the power that holds the worlds in place. Faith is the power by which God works. When we have faith, we have access to his power.
But remember the commandment is not just to have faith in a general sense. We are to have faith in a person, faith in Jesus Christ. When we seek to understand that better, we’ll understand why we are to end all our prayers “in the name of Jesus Christ.” When we pray in that manner, we’re asking for the grace of the Lord Jesus Christ to intervene on our behalf. If we keep our faith centered in him, it will help us to have much more power than if we pray without such faith. ~Gene R. Cook, A Year of Powerful Prayer (Salt Lake City: Deseret Book, 2013), 95-96