The Catholic Church cannot be considered christian because of several things. Firstly confession breaks the relationship between yourself and God, forcing that you cleanse yourself from your sins by telling another human (a father, which calling him father is agains a slap in Gods face because god said very clearly, I am the only Father. All humans are equal, would a sheep call another sheep a shepard?) who acts as an intermediary between yourself and God.
Penance is a holy sacrament. When a priest does this, he absolves in the name of Christ. Part of Catholic doctrine is that the only Priest is Christ, the High Priest. All of our priests are only priests, insofar as they enter into Christ's priesthood. The point, of course, is that when one confesses sins in penance, or confession, there is a threefold process by which God absolves sins. The sacrament was instituted by Christ himself.
Secondly idol worship and ancestor worship which is strictly forbidden in Christanity runs rampant in all Catholic churches. Many catholics have St whoever pendants around their necks, they kneel before statues of the virgin mary and light candles, they pray to other saints for guidance and help.
People often misinterpret prayer to the Virgin Mary and the saints. It is not that we worship them; it is that we ask them to pray for us. When someone is titled "Saint", it is because the Church has come to the conclusion after much time and review that this person must be in Heaven. We know, of course, the same of Mary, who ascended body and soul. It is logical that someone who is in the Beatific Vision, or is in direct sight of God, would pray more powerfully than us. Therefore, we ask them to pray for us. Worship and adoration is reserved for God alone, in the persons of the Father, the Son, and the Holy Spirit.
There is this hierachy in the catholic church and God clearly states that we are all equal and none of us are more holy than the other. Yet all catholics look at the pope as a figure of God, they are more excited to see the pope walk past them than to pray to God and feel god who walks past us everywhere and anywhere.
The greatest title of the Pope is servant. There has to be some organization to the Church. When there is not, we end up with thousands of Protestant denominations. I'm not sure where you read, however, that no person is more holy than another. Of couse we are all equal in dignity and created good, but naturally, someone who has a better relationship with Christ through prayer and ministry is going to have more sanctifying grace.
The law in the bible is basically broken in two, the old testament law and the new testament. Christ replaced a lot of the old laws, especially of sacrifice. In the old law pepole had to sacrifice animals to deal with their sins, now God has given us Christ, a permanent sacrifice, to deal with our sins. So laws change. Same with what you eat, what you put into your body. Christ clearly said it is not as bad what you put into your mouth than what comes out of it.
The bible is not broken into two, nor is the Law. The two books are one Word of God. The coming of Christ in the fullness of time replaced the need for material sacrifice, as we now have the eternal Paschal sacrifice Who transcends time and space. We longer need sacrifice animals, as God has given us his only Son, that so long as we eat His body and drink His blood, we may have eternal life in us. Some laws change - these are simply traditions. The Law does not change.
GOD IS MYSTERIOUS. THE MORE WE TRY TO GUESS WHAT HE IS OR WHAT HE ISN'T THE FURTHER WE GET AWAY FROM HIM. THE MORE FAITH GUIDES US TO ACCEPT GOD THE CLOSER WE COME TO THE TRUTH. BUT NO HUMAN WORDS WILL EVER DESCRIBE GOD. How do you explain love? You cannot, it is a force and you can only explain what it does to you.
Of course God is mysterious. But what light do you glean if you never attempt to understand the Mystery? We know that the Infinite is by definition beyond the comprehension of the Finite, however, this does not mean that we cannot advance our knowledge. Faith guides us to accept God? Faith precedes understanding, that is true. But faith is a foundation upon which knowledge is built. If you love someone, don't you want to get to know him or her? It cannot be any different with God.
Best,
Michael