It is not outright defined in the Bible.
This is a recurring issue with the Bible, which has led to countless denominations that differ on points both major and minor. This has led, over the centuries, to occasional violence and brutality as people who seek to serve the same god nonetheless attack and brutalize one another. You'd think that a being as capable and immensely intelligent as Yahweh would have foreseen this and made the book much clear and direct, so as to avoid having so many dedicated people massacring one another, when they otherwise would have embraced in brotherhood.