The main reason it is confusing is because people say they are sola Scriptura when they are not.
Communion is probably a good example to talk about.
We see for instance that Lutherans who hold to sola Scriptura and the Orthodox based on their understanding of Tradition are in agreement concerning the presence of our Lord. While somewhat different language is often used, basically you see both groups believe in a mystery that Jesus' body and blood are really and truly present in a sacramental union. Both make an effort to not go beyond that because God hasn't revealed more than that.
Then you take the Catholics and many Protestants they also are in agreement. Both turn to the philosophies of man to explain Communion. Catholics adopted the idea of accidents and transubstantiation from philosophy. Many Protestants too take from philosophy the idea that a physical body can only be one place at a time and therefore believe it is impossible for Christ's body to be in many places at one time.
You don't find transubstantiation nor the absence of the Lord in scripture, that isn't it's source.
It gets confusing because people will say they are sola Scriptura and then go on to explain Communion using the philosophies of man.
So the problem is not different interpretation of scriptures, but different sources of doctrine. It's not interpretation that disagrees, it's the sources.
You Jack need to be like the Bereans and test what is taught and those who teach by the scriptures to see if it is true.
Now as for the persons or persons who claim the infallible guidance of the Holy Spirit, again we turn to scripture for if the enthusiast is speaking contrary to scripture that would mean the Holy Spirit is contradicting the Holy Spirit, something that cannot be. And if it is in addition to scripture it is unnecessary because scripture is sufficient. What happens over and over is that people insert themselves and teach their beliefs and then justify them by claiming they are from God.
It is a case again where we see Catholics and many Protestants again are in agreement. They claim to have the guidance of the Holy Spirit and so chose to follow that even when it conflicts with the Bible.
Once again Jack, you are instructed to test them, and the rule given is scripture.
So going back to the matter of the sacramental union we see the words of Jesus Christ, "This is my body", and "This is my blood." This in itself is sufficient to understand that they really and truly are his body and blood. We know that because scripture requires it.
15 I speak as to wise men; judge ye what I say. 16 The cup of blessing which we bless, is it not the communion of the blood of Christ? The bread which we break, is it not the communion of the body of Christ? 17 For we
being many are one bread,
and one body: for we are all partakers of that one bread. 18 Behold Israel after the flesh: are not they which eat of the sacrifices partakers of the altar? 19 What say I then? that the idol is any thing, or that which is offered in sacrifice to idols is any thing? 20 But I
say, that the things which the Gentiles sacrifice, they sacrifice to devils, and not to God: and I would not that ye should have fellowship with devils. 21 Ye cannot drink the cup of the Lord, and the cup of devils: ye cannot be partakers of the Lords table, and of the table of devils. 22 Do we provoke the Lord to jealousy? are we stronger than he?
http://christianforums.com/newreply.php?do=newreply&noquote=1&p=46700042#_ftn1
http://christianforums.com/newreply.php?do=newreply&noquote=1&p=46700042#_ftnref1The Holy Bible : King James Version. 1995 (electronic ed. of the 1769 edition of the 1611 Authorized Version.) (1 Co 10:15-22). Bellingham WA: Logos Research Systems, Inc.
Scripture uses a rhetorical question requiring the reader to answer "Yes" to the real presence of our Lord. It goes on indeed to teach us that we are one body because there is one bread. Now note it's still called bread, not an accident as the Catholics get from man's philosophies. And how could just bread make us one? Of course it couldn't, it is Jesus' body, present in the sacramental union with the bread that actually unites us into one body, the body of Christ. And this is emphasized by the contrast between the false gods and they fact that they and food sacrificed to them are really nothing, while the body and blood of Jesus are indeed true and powerful.
So there, we have scripture giving us the truth and showing us the true understanding.
Hope that helps Jack.
Marv