Mmm...not really, the emphasis wasn't on the Bible text so much as the Christian liturgy. Throughout most of Christian history, people were illiterate and couldn't read even in their own language.
That, and handcopied books were fantastically expensive. In the Middle Ages, they cost about as much as a house.
I disagree. The Holy Scriptures were the foundation upon which the liturgy was built. Jerome's commission by the Roman church to translate the Hebrew and Greek texts into Latin was precisely for the purpose of individual knowledge and study. There were other translations in different languages that existed then and continued to be others. The New Testament was written in Koine Greek because it was the lingua franca of that time.
I think the idea that everyone was illiterate is a common misconception that many people just accept. We shouldn't forget the many, many times Scripture encourages believers to study the word, to hear it and to obey what God has revealed and preserved in the written word. Also, the first Christians were Jews and it was customary that they could read and write. From https://christianpublishinghouse.co/2019/02/19/were-jesus-the-apostles-and-the-early-christians-illiterate-uneducated/ we learn:
During the first seven years of Christianity (29-36 C.E.), three and a half with Jesus’ ministry and three and a half after his ascension, only Jewish people became disciples of Christ and formed the newly founded Christian congregation. In 36 C.E. the first gentile was baptized: Cornelius.[7] From that time forward Gentiles came into the Christian congregations. However, the church still consisted largely of Jewish converts. What do we know of the Jewish family, as far as education? Within the nation of Israel, everyone was strongly encouraged to be literate. The texts of Deuteronomy 6:8-9 and 11:20 were figurative (not to be taken literally). However, we are to ascertain what was meant by the figurative language, and that meaning is what we take literally.
8 You shall bind them [God’s Word] as a sign on your hand, and they shall be as frontlets between your eyes. 9 You shall write them on the doorposts of your house and on your gates.
Deuteronomy 11:20 English Standard Version (ESV)
20 You shall write them on the doorposts of your house and on your gates,
The command to bind God’s Word “as a sign on your hand,” denoted constant remembrance and attention. The command that the Word of God was “to be as frontlet bands between your eyes,” denoted that the Law should be kept before their eyes constantly, so that wherever they looked, whatever was before them, they would see the law before them. Therefore, while figurative, these texts implied that Jewish children grew up being taught how to read and to write. The Gezer Calendar (ancient Hebrew writing), dated to the 10th-century B.C.E., is believed by some scholars to be a schoolboy’s memory exercise.
Philo of Alexandria (20 B.C.E.–50 C. E.) a Hellenistic Jewish philosopher, whose first language was Greek, had this to say about Jewish parents and how they taught their Children the Law and how to read it. Philo stated, “All men guard their own customs, but this is especially true of the Jewish nation. Holding that the laws are oracles vouchsafed by God and having been trained [paideuthentes] in this doctrine from their earliest years, they carry the likenesses of the commandments enshrined in their souls.” (Borgen 1997, 187) This certainly involved the ability to read and write at a competent level. Josephus (37-100 C.E.), the first-century Jewish historian, writes, “Our principle care of all is this, to educate our children [paidotrophian] well; and we think it to be the most necessary business of our whole life to observe the laws that have been given us, and to keep those rules of piety that have been delivered down to us.” (Whiston 1987, Against Apion 1.60) Even allowing for an overemphasis for apologetic purposes; clearly, Jesus was carefully grounded in the Word of God (Hebrew Old Testament), as was true of other Jews of the time. Josephus also says,
“but for our people, if anybody do but ask any one of them about our laws, he will more readily tell them all than he will tell his own name, and this in consequence of our having learned them immediately as soon as ever we became sensible of anything, and of our having them, as it were engraven on our souls. Our transgressors of them are but few; and it is impossible when any do offend, to escape punishment.” (Whiston 1987, Against Apion 2.178) He also says: “[the Law] also commands us to bring those children up in learning [grammata paideuein] and to exercise them in the laws, and make them acquainted with the acts of their predecessors, in order to their imitation of them, and that they may be nourished up in the laws from their infancy, and might neither transgress them nor yet have any pretense for their ignorance of them.” (Whiston 1987, Against Apion 2.204) Again, this clearly involves at a minimum the ability to read and write at a competent level.
From the above, we find that the Jewish family education revolved around the study of the Mosaic Law. If their children were going to live by the Law, they needed to know what it says, as well as understand it. If they were going to know and understand the Law, this would require the ability to read it, and hopefully apply it. Emil Schurer writes: “All zeal for education in the family, the school and the synagogue aimed at making the whole people a people of the law. The common man too was to know what the law commanded, and not only to know but to do it. His whole life was to be ruled according to the norm of the law; obedience thereto was to become a fixed custom, and departure therefrom an inward impossibility. On the whole, this object was to a great degree attained.” (Schurer 1890, Vol. 4, p. 89) Scott writes that “from at least the time of Ezra’s reading of the law (Neh. 8), education was a public process; study of the law was the focus of Jewish society as a whole. It was a lifelong commitment to all men. It began with the very young. The Mishnah[8] requires that children be taught ‘therein one year or two years before [they are of age], that they may become versed in the commandments.’ Other sources set different ages for beginning formal studies, some as early as five years.”[9] (Scott 1995, 257)
It may be that both Philo and Josephus are presenting their readers with an idyllic picture, and what they have to say could possibly refer primarily to wealthy Jewish families who could afford formal education. However, this would be shortsighted, for the Israelites had long been a people who valued the ability to read and write competently. In the apocryphal account of 4 Maccabees 18:10-19, a mother addresses her seven sons, who would be martyred, reminding them of their father’s teaching. There is nothing in the account to suggest that they were from a wealthy family. Herein the mother referred to numerous historical characters throughout the Old Testament and quoted from numerous books – Isaiah 43.2; Psalm 34:19; Proverbs 3:18; Ezekiel 37:3; Deuteronomy 32:39.
Jesus would have received his education from three sources. As was made clear from the above, Joseph, Jesus’ stepfather would have played a major role in his education. Paul said that young Timothy was trained in “the sacred writings” by his mother, Eunice, and his grandmother Lois. (2 Tim. 1:5; 3:15) Certainly, if Timothy received education in the law from his mother because his Father was a Greek (Acts 16:1), no doubt Jesus did as well after Joseph died.
Jesus would have also received education in the Scriptures from the attendant at the synagogue. In the first-century C.E., the synagogue was a place of instruction, not a place of sacrifices. The people carried out their sacrifices to God at the temple. The exercises within the synagogue covered such areas as praise, prayer, and recitation and reading of the Scriptures, in addition to expository preaching. – Mark 12:40; Luke 20:47
Before any instruction in the holy laws and unwritten customs are taught… from their swaddling clothes by parents and teachers and educators to believe in God, the one Father, and Creator of the world. (Philo Legatio ad Gaium 115.)