To claim that your source of morality comes from the teachings of the bible and that those teachings are "good" suggests that you had a concept of what good was before you read the teachings.
If you claim that your morality came from the teachings of the bible, how did you come to the conclusion that those teachings were good in the first place?
If you claim that your morality came from the teachings of the bible, how did you come to the conclusion that those teachings were good in the first place?