And? Does the Bible say that any term not explicitly mentioned in Scripture is false? If that were true, one would have to abandon Mormonism and Luther's doctrine of "the Bible alone," among countless other beliefs, both true and false.
and was not created until AD 325.
The dogma was formally defined by the Church (to which Christ told us to take our disagreements) at the Council of Nicea, but the notion is evident in Scripture, particularly Jesus' command to baptize in the name of the Father, Son and Holy Spirit (II. Proof of Doctrine from Scripture).
Interestingly enough, it wasn't until around the year 400 that the Church, which Scripture calls "the pillar and foundation of truth, determined the canon of Scripture. Until then there was no definitive collection of Scriptures, although a consensus had begun to solidify by that time.
It's also worth noting that it wasn't until the year 1500 that the non-Biblical doctrine of "the Bible alone" was proposed.