John Calvin on John 14:14

14. If you shall ask any thing in my name, I will do it. This is not a useless repetition. All see and feel that they are unworthy to approach God; and yet the greater part of men burst forward, as if they were out of their senses, and rashly and haughtily address God; and afterwards, when that unworthiness, of which I have spoken, comes to their recollection, every man contrives for himself various expedients. On the other hand, when God invites us to himself, he holds out to us one Mediator only, by whom he is willing to be appeased and reconciled. But here again the wickedness of the human mind breaks out for the greater part do not cease to forsake the road, and to pass through many windings. The reason why they do so is, that they have but a poor and slender perception of the power and goodness of God in Christ. To this is added a second error, that we do not consider that we are justly excluded from approaching God, until he calls us, and that we are called only through the Son. And if one passage has not sufficient weight with us, let us know that, when Christ repeats, a second time, that we must pray to the Father in his name, he lays his hand on us, as it were, that we may not lose our pains by fruitlessly seeking other intercessors.

John 14:15-18

15. If you love me, keep my commandments. 16. And I will pray to the Father, and he will give you another Comforter, that he may abide with you for ever; 17. The Spirit of truth, whom the world cannot receive, because it seeth him not, and knoweth him not; but you know him; for he dwelleth with you, and shall be in you. 18. I will not leave you orphans; I come to you. “Je viendrai a vous;” — “I will come to you.”