"From this plain reason then appears the necessity why we, as well as the first apostles, in this sense, must receive the Spirit of God. For the great work of sanctification, or making us holy, is particularly reserved to the Holy Ghost; therefore, our Lord says, 'Unless a man be born of the Spirit, he cannot enter into the kingdom of God.'
Jesus Christ came down to save us, not only from the guilt, but also from the power of sin: and however often we have repeated our creed, and told God we believe in the Holy Ghost, yet, if we have not believed in him, so as to be really united to Jesus Christ by him, we have no more concord with Jesus Christ than Belial himself.
And now, my brethren, what shall I say more? Tell me, are not many of you offended at what has been said already? Do not some of you think, though I mean well, yet I have carried the point a little too far? Are not others ready to cry out, if this be true, who then can be saved? Is not this driving people into despair?
Yes, I ingenuously confess it is; but into what despair? A despair of mercy through Christ? No, God forbid; but a despair of living with God without receiving the Holy Ghost. And I would to God, that not only all you that hear me this day, but that the whole world was filled with this despair. Believe me, I have been doing no more than you allow your bodily physicians to do every day: if you have a wound, and are in earnest about a cure, you bid the surgeon probe it to the very bottom; and shall not the physician of your souls be allowed the same freedom? What have I been doing but searching your natural wounds, that I might convince you of your danger, and put you upon applying to Jesus Christ for a remedy? Indeed I have dealt with you as gently as I could; and now I have wounded, I will attempt to heal you.
For I was in the last place, to exhort you all to come to Jesus Christ by faith, whereby you, even you also, shall receive the Holy Ghost. 'For this spake he of the Spirit, which they that believe on him should receive.'
This, this is what I long to come to. Hitherto I have been preaching only the law; but behold I bring you glad tidings of great joy. If I have wounded you, be not afraid; behold, I now bring a remedy for all your wounds. Notwithstanding you are sunk into the nature of the beast and devil, yet, if you truly believe on Jesus Christ, you shall receive the quickening Spirit promised in the text, and be restored to the glorious liberties of the sons of God; I say, if you believe on Jesus Christ. 'For by faith we are saved; it is not of works, lest any one should boast.'" ~ George Whitefield in a sermon entitled "The Indwelling of the Spirit, the Common Privilege of all Believers"