The religious texts of Israeli origin, considered in whole by Christianity and in part (the Old Testament) by Judaism as holy.
The questions asked can refer to both the Bible itself (its authorship, dates of creation etc.) as well as historical events or particular persons depicted in it (mostly Kings and Chronicles), making the Bible a historical source. Theological or doctrinal questions about the content of the Bible, its meaning, or relevance (e.g. whether a certain behavior is a sin, or whether an apparent miracle was really caused by divine intervention) should be directed at a qualified clergyperson that you trust and are off-topic on History Stack Exchange.