The Doctrine of the Trinity in the Greek New Testament

There are places that mention Father, Son and Spirit but the doctrine of the Trinity is not just yet those names. Erasmus publishes a Greek New Testament in 1516; his first edition did not have that verse. So it's in the King James because it was in the edition of Erasmus' Greek New Testament that they used. But one problems with translation is how to keep translators from getting biases in translation.