Our Lord clearly defines how the nations are to be baptized (in the name of, mentioning individually, the Holy Trinity). You can rationalize away, but unless you were baptized by the Trinitarina formula it's not what the Lord commanded.
And He also leaves no doubt that the His commandments are to be taught by the Church. He didn't say "let them read the Bible." The Church elders are to teach. No Sola Scriptura there.
It doesn't get much clearer than this.
I think you've come down with an acute figure of speech.
You might note that few of the great masses of people could read. How many of the 5000 that heard Jesus in the wilderness, which he fed with the bread (not counting the women and children), do you figure could read.
Nowadays it's quite different. The words of Jesus Himself are available to the people, and they read about His promises and teachings, which are for them, who have souls and who can be filled with the Spirit.