Of Prayer, by John Calvin, tr. Henry Beveridge , at sacred-texts.com
Another rule of prayer is, that in asking we must always truly feel our wants, and seriously considering that we need all the things which we ask, accompany the prayer with a sincere, nay, ardent desire of obtaining them. Many repeat prayers in a perfunctory manner from a set form, as if they were performing a task to God, and though they confess that this is a necessary remedy for the evils of their condition, because it were fatal to be left without the divine aid which they implore, it still appears that they perform the duty from custom, because their minds are meanwhile cold, and they ponder not what they ask. A general and confused feeling of their necessity leads them to pray, but it does not make them solicitous as in a matter of present consequence, that they may obtain the supply of their need. Moreover, can we suppose anything more hateful or even more execrable to God than this fiction of asking the pardon of sins, while he who asks at the very time either thinks that he is not a sinner, or, at least, is not thinking that he is a sinner; in other words, a fiction by which God is plainly held in derision? But mankind, as I have lately said, are full of depravity, so that in the way of perfunctory service they often ask many things of God which they think come to them without his beneficence, or from some other quarter, or are already certainly in their possession. There is another fault which seems less heinous, but is not to be tolerated. Some murmur out prayers without meditation, their only principle being that God is to be propitiated by prayer. Believers ought to be specially on their guard never to appear in the presence of God with the intention of presenting a request unless they are under some serious impression, and are, at the same time, desirous to obtain it. Nay, although in these things which we ask only for the glory of God, we seem not at first sight to consult for our necessity, yet we ought not to ask with less fervour and vehemency of desire. For instance, when we pray that his name be hallowed — that hallowing must, so to speak, be earnestly hungered and thirsted after.