My dad says that it’s our job (as individual believers) to interpret Scripture, and not the teaching authority of the Church.
Start out by agreeing with the first part of this - yes it is our job to interpret Scripture…
Then ask him what to do when two sincere Christians, each reading Scripture with a sincere heart, come up with differing interpretations on some important point?
See how he responds - "well we discuss it - and talk to the pastor or see what this or that concordance has to say…blah blah blah…
The just say to him - Let’s see what Scripture tells us to do. Open the bible then to Mt 18:15-18 and read through the passage
15 "If your brother sins against you, go and tell him his fault, between you and him alone. If he listens to you, you have gained your brother. 16 But if he does not listen, take one or two others along with you, that every word may be confirmed by the evidence of two or three witnesses. 17 If he refuses to listen to them, tell it to the church; and if he refuses to listen even to the church, let him be to you as a Gentile and a tax collector. 18 Truly, I say to you, whatever you bind on earth shall be bound in heaven, and whatever you loose on earth shall be loosed in heaven.
He’ll say - That isn’t about church teaching that’s about personal sin…
Then say to him, "So dad - would you say that teaching a wrong doctrine is a sin? A sin against you and the whole church?
He will most likely say “Yes”
"Well then this passage fits doesn’t it. Now note what it says if the issue cannot be resolved quietly among friends…‘Go and Tell the Church’ and then ‘Listen to The Church’ on pain of being removed and treated as heathen and tax collector (shunned).
This is immediately followed by the granting of authority…the Binding and the Loosing of “Whatever”…
“BUT WAIT!!!”, you say in your best TV commercial voice - That’s not ALL…We can see this very set of instructions put into practice in Acts 15…
Look dad - Some individuals come up to Antioch and stir up this issue about circumcision. Not even Paul himself can resolve the matter. And what is more, the side in favor of circumcision has the weight of Scripture on their side. Still the matter cannot be settled and so Paul and some others go up to Jerusalem and a council is held. There the Church makes a decision - one that “sets aside” whole swathes of Scriptural rules and requirements. Amazing - The Church - with authority to bind and loose - just set aside (loosed) almost all of the Mosaic Law…
He also implied that any authority the Church may have had was no longer needed and was taken away when the Bible was completed.
If he believes that he should be able to find it that instruction in the bible.
I’m not sure how to respond. He acts like it’s a heresy to claim The Catholic Church has infallible doctrines because he says “No one has it all right.” He says Paul instructed Timothy to study Scripture to determine doctrine, as though it was his job to decide what it meant, not the Church’s.
Of course he told Timothy to study Scripture - He also said:
CHURCH
Eph 3:8-12
8 To me, though I am the very least of all the saints, this grace was given, to preach to the Gentiles the unsearchable riches of Christ, 9 and to make all men see what is the plan of the mystery hidden for ages in God who created all things; 10
that through the church the manifold wisdom of God might now be made known to the principalities and powers in the heavenly places. 11 This was according to the eternal purpose which he has realized in Christ Jesus our Lord, 12 in whom we have boldness and confidence of access through our faith in him
1 Tim 3:15
if I am delayed, you may know how one ought to behave in the household of God, which is the church of the living God, the pillar and bulwark of the truth.
So - Scripture points to unity in an “Authoritative Church” to protect the Gospel. It does NOT point to individual and private interpretation.
Then after you show him these passages that point to an authoritative Church speaking on doctrinal issues - ask him…
“Can you show me equally compelling evidence for Sola Scriptura and private interpretation?”
I have asked this question of many protestants and none have taken me up on the challenge…
Peace
James