The Christian Bible ultimately is about telling the story of a kind and caring God, and that we are made in God’s image. The early Israelite God, in the Torah and Old Testament, by comparison, was more focused on adhering to strict rules, traditions, and collective punishment for lapsing in the early Israelites commitment to the rules and traditions.

I do agree that there are parts of the Bible which were added where the authenticity of the author was forged. For instance, many of the books attributed to Paul were not written by him, yet they were made to sound like they were his instructions. Most notably, the whole section about women not being allowed in leadership positions in the church. Hierarchies were not inherently parts of Jesus’ teachings at all, but it’s how the early Christians chose to organize themselves. It’s how they maintained aspects of the patriarchy as well.

Some people would agree with you that the Bible should have kept being added to. In some ways that’s seen among some Christian faiths, although few add to the Bible itself for those stories. For instance, with Catholics there are the Saints which followers of the faith learn about, not generally all of them but one(s) that align with the aspects of their faith they care most about. Such as a focus on education, feeding the hungry, healing the sick and injured, etc.