However, some clues can be found in his writings:
* Some themes in his stories echo biblical narratives: For example, the themes of temptation and consequences in "Charlie and the Chocolate Factory," or the struggle against evil in "The Witches."
* He drew inspiration from folklore: Dahl often incorporated elements of folklore and mythology into his stories, which often have biblical roots.
* He was raised in a Christian household: Dahl grew up in a Welsh family that practiced a moderate form of Christianity. However, there's no evidence to suggest he maintained strong religious beliefs as an adult.
Ultimately, we can't say for certain if Roald Dahl read the Bible. He was known to be private about his personal life and religious beliefs, so it's likely this aspect remained undisclosed.