This is the King James Version (KJV) of the Bible, traditionally the principal English translation. The KJV is considered one of the masterpieces of early modern English literature, although most modern readers find the language a bit dated and occasionally opaque. There have been numerous successive English translations, many of which have borrowed heavily from the KJV.
In the Old Testament, there are also many differences from modern translations that are based not on manuscript differences, but on a different understanding of Ancient Hebrew vocabulary or grammar by the translators. For example, in modern translations it is clear that Job 28:111 is referring throughout to mining operations, which is not at all apparent from the text of the Authorized Version.