The nice thing about the Catholic faith is that everything is written down and easily approachable. So, If we're wrong about something the Church teaches, it should be a fairly simple exercise to demonstrate just how we are in error. For example, if the celibacy of priests is really a doctrine and not a practice, as you say, then it should be relatively easy to find within the teachings of the Church just what this 'doctrine' says. It's all there. If you choose to persist in your error, then you are without excuse.
But, on one point you are precisely correct. What we have in you is what we have in a lot of those who have placed themselves over, outside and opposed to the Catholic Church ~ a bible and an opinion.
I learn through guidance of the HS from the holy scriptures which were themselves inspired by the HS.
Mt 7:21 ¶ Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven.
Mt 7:22 Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works?
Mt 7:23 And then will I profess unto them, I never knew you: depart from me, ye that work iniquity.
Mt 7:24 Therefore whosoever heareth these sayings of mine, and doeth them, I will liken him unto a wise man, which built his house upon a rock:
Ro 8:14 For as many as are led by the Spirit of God, they are the sons of God.
Ro 8:15 For ye have not received the spirit of bondage again to fear; but ye have received the Spirit of adoption, whereby we cry, Abba, Father.
Joh 14:15 ¶ If ye love me, keep my commandments.
Joh 14:16 And I will pray the Father, and he shall give you another Comforter, that he may abide with you for ever;
Joh 14:17 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.
Joh 14:18 ¶ I will not leave you comfortless: I will come to you.
Joh 14:19 Yet a little while, and the world seeth me no more; but ye see me: because I live, ye shall live also.
Joh 14:20 At that day ye shall know that I am in my Father, and ye in me, and I in you.
Joh 14:21 He that hath my commandments, and keepeth them, he it is that loveth me: and he that loveth me shall be loved of my Father, and I will love him, and will manifest myself to him.
Joh 14:22 Judas saith unto him, not Iscariot, Lord, how is it that thou wilt manifest thyself unto us, and not unto the world?
Joh 14:23 Jesus answered and said unto him, If a man love me, he will keep my words: and my Father will love him, and we will come unto him, and make our abode with him.
Joh 14:24 He that loveth me not keepeth not my sayings: and the word which ye hear is not mine, but the Father's which sent me.
Joh 14:25 ¶ These things have I spoken unto you, being yet present with you.
Joh 14:26 But the Comforter, which is the Holy Ghost, whom the Father will send in my name, he shall teach you all things, and bring all things to your remembrance, whatsoever I have said unto you.
Joh 14:27 Peace I leave with you, my peace I give unto you: not as the world giveth, give I unto you. Let not your heart be troubled, neither let it be afraid.
Heb 12:5 And ye have forgotten the exhortation which speaketh unto you as unto children, My son, despise not thou the chastening of the Lord, nor faint when thou art rebuked of him:
Heb 12:6 For whom the Lord loveth he chasteneth, and scourgeth every son whom he receiveth.
Heb 12:7 If ye endure chastening, God dealeth with you as with sons; for what son is he whom the father chasteneth not?
Heb 12:8 But if ye be without chastisement, whereof all are partakers, then are ye bastards, and not sons.
Ga 4:6 And because ye are sons, God hath sent forth the Spirit of his Son into your hearts, crying, Abba, Father.
1Jo 3:1 ¶ Behold, what manner of love the Father hath bestowed upon us, that we should be called the sons of God: therefore the world knoweth us not, because it knew him not.
1Jo 3:2 Beloved, now are we the sons of God, and it doth not yet appear what we shall be: but we know that, when he shall appear, we shall be like him; for we shall see him as he is.
1Jo 3:3 And every man that hath this hope in him purifieth himself, even as he is pure.
1Co 2:13 Which things also we speak, not in the words which man's wisdom teacheth,
but which the Holy Ghost teacheth; comparing spiritual things with spiritual.
1Co 2:14 But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know them, because they are spiritually discerned.
1Co 2:15 But he that is spiritual judgeth all things, yet he himself is judged of no man.
1Co 2:16 For who hath known the mind of the Lord, that he may instruct him? But we have the mind of Christ.