I can understand any father would be concerned for their son’s soul if he believes his son was in error. I don’t think it would matter what his faith was.
I won’t speak on Tradition vs Sola Scriptura as I think many others here who have responded have made a much better case than I have/can. But, here I believe is the heart of the matter in your case: From a Protestant’s point of view, he really should not be concerned for your soul unless you are practicing a works-based faith – which in my view Roman Catholicism is not. Think about this, our belief in the means of salvation is not much different than that of the Presbyterians (especially the more conservative branches: PCA or Orthodox Presbyterianism).
God calls us. We respond in faith (which is a gift from God). We are baptized/confirmed. We do good works because we belong to Him. It is good for us and helps to sanctify us! Apart from good works, our faith is dead. No Protestant can/should disagree with this. While He may look with favor on my attempts at good works, none of my good works will ever be counted for my own righteousness. I CANNOT earn my way into heaven.
Now, the means of grace we do differ on but from a Protestant’s view, I don’t believe that should matter.
- I am baptized/confirmed because I am responding to God’s grace (no Baptist can disagree here!).
- I take communion and believe in the real presence because I want to be with Jesus Christ who is God! No amount of Eucharistic adoration here will matter however if I have a dead faith. They may disagree with the Real Presence but again this should in no way cause them to sincerely believe we are idolators. We do not worship stones or sticks but when we believe what we experience is Christ? We go to our knees as they would do if they recognized Christ.
- We are certainly commanded to confess our sins to each other. But these are not forgiven if we are not truly penitent or do not have a desire that our bad habits, inclinations to sin be lifted from us. What Protestant can disagree with this?
A couple of other things do seem to bother our evangelical Christian brothers and sisters but they should not:
We venerate Mary, the Theotokos (and unashamedly so!), but we do not worship her. We have disagreements on certain aspects of her nature but again, as a Protestant, they should not judge any of us (according to their own theology).
We do not worship the Saints (and certainly we should not!). We ask the Saints for intercessory prayer. They are in heaven. Why can they not pray for us or hear our petitions? This should not be a problem for a Protestant really. Do they know for a fact that the Saints do not or choose not to hear us?
I was raised Roman Catholic (baptized and confirmed) but I do not have an issue with my own son if he makes the decision to become a Baptist, Presbyterian or Methodist. I believe he will be missing out on a lot of good things that our living God offers us but this would be
his choice. I do not fear one bit for his soul as long as he knows there is a God: that God is just, He loves him and offers Himself freely to him and that if my son professes to be a Christian then he must be one.
Jesus answered him [Peter], “If I do not wash you, you have no part with Me.” More than baptism, we MUST allow Jesus to serve us. If we do not cooperate with Him or make the effort to do so, then you get the idea.
So, in my humble opinion. We are different yet we are not so much as we think.
“There are not a hundred people in America who hate the Catholic Church. There are millions of people who hate what they wrongly believe to be the Catholic Church — which is, of course, quite a different thing.”
I was deep into PCA Church. Almost all of them I met are holy and sincere Christians (more sincere and thoughtful than I ever was and probably even now). I am certain your dad is a great Christian. Assure him you are the same as much as you are able and he will be content to know all is well with you and your soul. Above all, allow the peace of Christ to abound between you and your family.
If I speak in human and angelic tongues but do not have love, I am a resounding gong or a clashing cymbal.
And if I have the gift of prophecy and comprehend all mysteries and all knowledge; if I have all faith so as to move mountains but do not have love, I am nothing.
If I give away everything I own, and if I hand my body over so that I may boast but do not have love, I gain nothing.
Love is patient, love is kind. It is not jealous, [love] is not pompous, it is not inflated,
it is not rude, it does not seek its own interests, it is not quick-tempered, it does not brood over injury,
it does not rejoice over wrongdoing but rejoices with the truth.
It bears all things, believes all things, hopes all things, endures all things.
God bless you.
I will pray for you and your father.