What Does "Inerrant" Mean, and Is the Bible Inerrant?
You will not find the word inerrancy anywhere in Scripture. It is a relatively newer term. The first known use of the term, with the present meaning, is found in 1837. It’s not shocking, then, that this word does not appear in the Bible. But the concept of a true, trustworthy, and authoritative Bible certainly does appear in Scripture.
Source: biblestudytools.com