Again, you are confusing categories. It is true that the Holy Spirit and Faith bring spiritual growth. Now, the question is, how do they do it?
They do it through teachers...
Eph 4:11 And he gave the apostles, the prophets, the evangelists, the shepherds and teachers,
Eph 4:12 to equip the saints for the work of ministry, for building up the body of Christ,
And these teachers utilize the Word of God...
1Th 2:13 And we also thank God constantly for this, that when you received the word of God, which you heard from us, you accepted it not as the word of men but as what it really is, the word of God, which is at work in you believers.
God does not just "poof" it into us. He uses means; and those means are teachers and preachers, teaching and preaching the Word.
We are all commanded to "not forsake the assembling of ourselves together.." meaning to be faithful in church and to sit under the teaching and preaching of others in the church.
However note that those "others" may not be seminary graduates. Not every pastor is.
Certainly not every SS teacher is. If it is not the pastor then very few SS teachers are seminary graduates. They are simply faithful members that have matured in the Lord. Thus going to church doesn't equate to a seminary training.
The command still stands in the Bible to study--2 Tim.2:15.
We don't live in the culture of the Apostle Paul, W. Carey, or even Spurgeon. Our technology has put us miles beyond them. Using a simple program like sword searcher (and perhaps there are better), the speed at which I can use a concordance, and certain commentaries is unfathomable compared to earlier days. What did they do before Strong or Cruden ever invent a Concordance? Paul didn't have one. Neither the early believers.
Some made some statements about learning Greek. Could a person learn Greek without going to seminary? My wife hasn't been to seminary, so I showed her that post. She disagreed. I suppose she's in that infinitesimally small group of people that Luke says can learn a language without going to seminary. Perhaps many people may have been offended by some of the comments made here. In reality we live in a highly educated society where people teach themselves all kinds of things including other languages, mission fields, history, culture, etc. They do so because they like to learn. Now almost everyone has that access at their fingertips. Books, knowledge, access to it, is readily available to anyone who wants to seek it out.
The only thing some seem to be debating is:
Is there a difference between the education that a person has who needs it to be spoon-fed to him, or
the education that a person who has to dig it out one shovel at a time?