It is Paul who exhorts :" Be imitators of me, brothers and sisters, and watch carefully those who are living this way, just as you have us as an example" (Philippians 3:17).
Paul, as a "spiritual father" teaches that we are to imitate him and those who walk in Christ. It is the goal of the spiritual father to, by exhortation, advice and example, to make of his charges sons of God. In example, Paul and others interpret/demonstrate the Gospel.
(I am not RC, btw.)
I agree, there is a difference between an intellectual assent to Christ (in this case Christianity becomes an 'ideology') and the conversion of the heart to Christ; as before, "their hearts shall live for ever". The conversion of the heart emmanates throughout the person, and Christianity is not then an intellectual assent, but the whole person is transformed towards Christ - "... from glory to glory ..." (St. Peter). In this person, is evidenced in its fullness "the Way", Christianity as life lived by the entirety of the person with Christ at the center.
Now, first off, let me apologize for being so rash. Paul is not your spiritual father. He was Timothy's though. Who truly is your spiritual father? I ask this not to pry, but for you to answer that for yourself. Now, I will show in Hebrews about our moderator which is Jesus Christ. It is through Him that we find grace. It is through Him that we are given the Holy Spirit, the helper, our comforter, counselor. I will make this short because I myself cannot stand a long explanation for something that I have my heart and mind set upon already what is true.
Hebrews 4:14 Seeing then that we have a great high priest, that is passed into the heavens, Jesus the Son of God, let us hold fast our profession.
Hebrews 4:16 Let us therefore come boldly unto the throne of grace, that we may find grace to help in time of need.
My spiritual mother here on earth is my pastor and father, well He is gone to the Lord. I am under stewards of the word, the anointing of others, humbling myself until I can carry that anointing myself. I am born of the Holy Spirit, water, and fire. The Spirit bears witness with my spirit that I am a child of God.
1 John 2:20 But ye have an unction from the Holy One, and ye know all things.
1 John 2:26-27
26 These things have I written unto you concerning them that seduce you.
27 But the anointing which ye have received of Him abideth in you, and ye need not that any man teach you: but as the same anointing teacheth you of all things, and is truth, and is no lie, and even as it hath taught you, ye shall abide in Him.