prayer is lost, and many people never prevail in prayer, because, when they have desires for particular blessings, they do not follow them up. They may have had desires, benevolent and pure, which were excited by the Spirit of God; and when they have them, they should persevere in prayer, for if they turn off their attention to other objects, they will quench the Spirit. We tell sinners not to turn off their minds from the one object, but to keep their attention fixed there, till they are saved.