Of Prayer, by John Calvin, tr. Henry Beveridge [1845], at sacred-texts.com
But since no man is worthy to come forward in his own name, and appear in the presence of God, our heavenly Father, to relieve us at once from fear and shame, with which all must feel oppressed, 8 has given us his Son, Jesus Christ our Lord, to be our Advocate and Mediator, that under his guidance we may approach securely, confiding that with him for our Intercessor nothing which we ask in his name will be denied to us, as there is nothing which the Father can deny to him (1 Timothy 2:5; 1 John 2:1; see sec. 36, 37). To this it is necessary to refer all that we have previously taught concerning faith; because, as the promise gives us Christ as our Mediator, so, unless our hope of obtaining what we ask is founded on him, it deprives us of the privilege of prayer. For it is impossible to think of the dread majesty of God without being filled with alarm; and hence the sense of our own unworthiness must keep us far away, until Christ interpose, and convert a throne of dreadful glory into a throne of grace, as the Apostle teaches that thus we can "come boldly unto the throne of grace, that we may obtain mercy, and find grace to help in time of need" (Hebrews 4:16). And as a rule has been laid down as to prayer, as a promise has been given that those who pray will be heard, so we are specially enjoined to pray in the name of Christ, the promise being that we shall obtain what we ask in his name. "Whatsoever ye shall ask in my name," says our Saviour, "that will I do; that the Father may be glorified in the Son;" " Hitherto ye have asked nothing in my name; ask, and ye shall receive, that your joy may be full" (John 14:13; John 16:24). Hence it is incontrovertibly clear that those who pray to God in any other name than that of Christ contumaciously falsify his orders, and regard his will as nothing, while they have no promise that they shall obtain. For, as Paul says "All the promises of God in him are yea, and in him amen;" (2 Corinthians 1:20), that is, are confirmed and fulfilled in him.
8 French, "Confusion que nous avons, ou devons avoir en nousmesmes;"—confusion which we have, or ought to have, in ourselves.