Pray often rather than very long at a time. It is hard to be very long in prayer, and not slacken in our affections.
William GurnallFurnish thyself with arguments from the promises to enforce thy prayers, and make them prevalent with God. The promises are the ground of faith, and faith, when strengthened, will make thee fervent, and such fervency ever speeds and returns with victory out of the field of prayer. The mightier any is in the Word, the more mighty he will be in prayer.
William GurnallCease to pray and thou will begin to sin. Prayer is not only a means to prevail for mercy but also to prevent sin.
William Gurnall