Answering a question with a question. Nice. Missed my point completely - not sure if that was deliberate since you seem to be an intelligent person and I hesitate to attribute motive to posts. Yes, I now have the written Scriptures but Joseph did not, yet he knew it would be a sin against God. Even with all the writings in the Old Testament, the Jewish people have Oral Traditions that are
referenced in the New Testament.
Matt. 2:23 - the prophecy “He shall be a Nazarene” is oral tradition. It is not found in the Old Testament. This demonstrates that the apostles relied upon oral tradition and taught by oral tradition.
Matt 23:2 - Jesus relies on the oral tradition of acknowledging Moses’ seat of authority (which passed from Moses to Joshua to the Sanhedrin). This is not recorded in the Old Testament.
John 19:26; 20:2; 21:20,24 - knowing that the “beloved disciple” is John is inferred from Scripture, but is also largely oral tradition.
Acts 20:35 - Paul relies on the oral tradition of the apostles for this statement (“it is better to give than to receive”) of Jesus. It is not recorded in the Gospels.
1 Cor. 7:10 - Paul relies on the oral tradition of the apostles to give the charge of Jesus that a wife should not separate from her husband.
1 Cor. 10:4 - Paul relies on the oral tradition of the rock following Moses. It is not recorded in the Old Testament. See Exodus 17:1-17 and Num. 20:2-13.
Eph 5:14 - Paul relies on oral tradition to quote an early Christian hymn - “awake O sleeper rise from the dead and Christ shall give you light.”
Heb. 11:37 - the author of Hebrews relies on the oral tradition of the martyrs being sawed in two. This is not recorded in the Old Testament.
Jude 9 - Jude relies on the oral tradition of the Archangel Michael’s dispute with satan over Moses’ body. This is not found in the Old Testament.
Jude 14-15 - Jude relies on the oral tradition of Enoch’s prophecy which is not recorded in the Old Testament.