Of Prayer, by John Calvin, tr. Henry Beveridge , at sacred-texts.com
This, however, does not prevent us from praying specially for ourselves, and certain others, provided our mind is not withdrawn from the view of this community, does not deviate from it, but constantly refers to it. For prayers, though couched in special terms, keeping that object still in view, cease not to be common. All this may easily be understood by analogy. There is a general command from God to relieve the necessities of all the poor, and yet this command is obeyed by those who with that view give succour to all whom they see or know to be in distress, although they pass by many whose wants are not less urgent, either because they cannot know or are unable to give supply to all. In this way there is nothing repugnant to the will of God in those who, giving heed to this common society of the Church, yet offer up particular prayers, in which, with a public mind, though in special terms, they commend to God themselves or others, with whose necessity he has been pleased to make them more familiarly acquainted.
It is true that prayer and the giving of our substance are not in all respects alike. We can only bestow the kindness of our liberality on those of whose wants we are aware, whereas in prayer we can assist the greatest strangers, how wide soever the space which may separate them from us. This is done by that general form of prayer which, including all the sons of God, includes them also. To this we may refer the exhortation which Paul gave to the believers of his age, to lift up "holy hands without wrath and doubting" (1 Timothy 2:8). By reminding them that dissension is a bar to prayer, he shows it to be his wish that they should with one accord present their prayers in common.