A few years ago, I saw a post by someone that immediately struck me as off:
"Sola Scriptura" is this a true saying? No, it is not. A person could memorize all of scripture and be no better for it. It is the Holy Spirit that gives understanding. It is not something that can be put into a bible translation, bible commentary, a theological writing, or traditions. It is the living water that flows from God. Do not put your trust in people and what they say, put your trust in God. He says he will teach us through the Holy Spirit. Go to the Lord in sincere humbleness with an empty mind of a child and let him teach. Scripture and the Holy Spirit.
Immediately, there are a couple of issues here and I want to give them a quick response.
First, something that glares at me is the statement "He says he will teach us through the Holy Spirit". Where do we get this idea? From Scripture! So unless the poster is suggesting the Holy Spirit planted in their mind or outright audibly told them this, scripture was the source for this teaching.
Sola Scriptura in Latin means “by Scripture Alone”. In Protestant Christian doctrine, it means that the Bible, and the Bible alone, is the sole, infallible source for the teaching of the church and Revelation of God. It is considered inerrant and infallible in Christian doctrine.
Paul writes in 2 Timothy 3:16 that “All Scripture is inspired by God and profitable for teaching, for reproof, for correction, for training in righteousness”. This means that the words of scripture are not mere writings and teachings of men, but the words of the LORD Himself.
Jesus also said that the Holy Spirit would remind us of all Jesus said. “"But the Helper, the Holy Spirit, whom the Father will send in My name, He will teach you all things, and bring to your remembrance all that I said to you.” Here, Jesus is clearly speaking to the apostles. This does not mean the Holy Spirit doesn’t teach us, but Jesus is clearly telling the disciples that the Spirit would remind them of all that He said and they in turn were able to write it down.
Sola Scriptura is the doctrine that all scripture is the authority for doctrine and theology. It doesn’t mean that the Bible is the only source for truth. In fact, in order for the Bible to be true, Truth must already exist and have a standard for it – in the case of Truth, that standard is God Himself. But the Bible is the inspired world of God containing all of the information needed to make one wise unto salvation - 2 Timothy 3:15
This objection mischaracterizes Sola Scriptura as a claim to be the sole source of Truth which is not the claim being made by this doctrine. And it does not align with scripture itself which clearly shows us that the Bible is the ultimate written authority for Christian doctrine, theology and practice. While the Holy Spirit leads and prompts believers, it does not contradict scripture nor impart ancient secret truths not revealed in scripture before now.