Even the Spirit of truth; whom the world cannot receive, because it seeth Him not, neither knoweth Him: but ye know Him; for He dwelleth with you, and shall be in you. -John 14:17

The indwelling of the Holy Ghost is a subject so profound, and so having to do with the inner man, that no soul will be able truly and really to comprehend what I say, unless it has been taught of God. I have heard of an old minister, who told a fellow of one of the Cambridge colleges, that he understood a language that he never learned in all his life. “I have not,” he said, “even a smattering of Greek, and I know no Latin, but thank God, I can talk the language of Canaan, and that is more than you can.” So, beloved, I shall now have to talk a little of the language of Canaan. If you cannot comprehend me, I am much afraid it is because you are not of Israelitish extraction; you are not a child of God, nor an inheritor of the kingdom of heaven.

Old Ignatius, the martyr, used to call himself Theophorus, or Godbearer, “because,” said he, “I bear about with me the Holy Ghost.” And truly every Christian is a Godbearer. “Know ye not that ye are the temples of the Holy Ghost? for He dwelleth in you?” That man is no Christian who is not the subject of the indwelling of the Holy Spirit; he may talk well, he may understand theology, and be a sound Calvinist; he will be the child of nature finely dressed, but not the living child. He may be a man of so profound an intellect, so gigantic a soul, so comprehensive a mind, and so lofty an imagination, that he may dive into all the secrets of nature, may know the path which the eagle’s eye hath not seen, and go into depths where the ken of mortals reacheth not, but he shall not be a Christian with all his knowledge, he shall not be a son of God with all his researches, unless he understands what it is to have the Holy Ghost dwelling in him and abiding in him; yea, and that for ever. ~ C.H. Spurgeon

http://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0004.cfm