The Holy Spirit is the transforming agent who transforms us into the image of the Son of God. No outer person, not even the Son of God Himself while on earth, can save us (John 7:38-39; John 14:20). Only after His death and resurrection and the giving of the Holy Spirit could we be delivered and therefore converted. No outer belief system; no written creed or doctrine; no intellectual understanding; no affiliation with any denomination; no diligent bible reading; no endless prayer-life; no water baptism; nor church-going will suffice or take the place of the indwelling Holy Spirit that God promises to those who trust Jesus. God is a jealous God. He will not know anyone or thing that tries to take the place of His own indwelling Holy Spirit. Only His Holy Spirit will spring up in love and water the whole garden of our being with the glory of His Love-Fire. The gate is narrow, the way is steep and rugged, and is only opened to whosoever will. However, only a few will seek, will knock, and will desperately desire to enter in. There is another way, but it is broad, and many go that way, but it only leads to destruction and death (Matt. 7:13-14).
The glory of His Love-Fire is that it puts to death any intruder who tries to illegitimately lie with you and cause you to commit spiritual adultery (Jas. 4:4). God's Love-Fire keeps you from falling into the hands of the Harlot who continually tries to seduce your heart and mind to fornicate with other counterfeit loves and lovers. Elohim is jealously able to keep you from falling into the arms of false lovers, and to powerfully "present you faultless before the presence of His Glory with exceeding joy" (Jude 24). Trust Him!
The Bible says for us to "know no man after the flesh, yea we have known Christ after the flesh, yet NOW henceforth know we him no more" (II Cor. 5:16). But why must we not know Christ after the flesh? The simple reason is that nothing outside of us can save us. Not even an outer Savior, or an outer belief system. Neither can outer doctrines, church buildings, group associations, nor influences save us. Jesus had to go away so that He could send the last and only source of our redemption and perfection; that is, The Holy Spirit Himself. Only the indwelling, Third Person of the Trinity, who is God living in our flesh-vessel, can complete the work of redemption and bring us full circle back to our lost glory which was stolen from our first father, Adam.