You can pray that God will give more faith to you or to someone else. Here are some other words that cover much of the same turf. It usually comes about because of the action of someone else. It infers that without such help, the task at hand could be accomplished only with great difficulty, if at all. It also infers that the 'someone else' is of higher rank, esteem, or authority.
Faith is related to promise.
You're not dealing with a Cosmic Invisible Man who gets his divine jollies out of tossing you forever into a blazing inferno. You're dealing with a God who wants to be a part of your life and wants you to be a part of God's. Christ is calling you', the Spirit says. The comfort comes when we embrace God's promises and surrender to God's love. The faith that saves me becomes my faith through experience.