It's with the understanding that the Bible provides it's own commentary... whatever subject that we are studying, we need to also look at what the rest of God's Word says about that subject.
Yes, going in to the Greek and Hebrew is very helpful. I like the KJV alot, but it does have it's errors as some passages are calvinistic which is not that big of a problem for me since other passages are not.
One thing is for sure in the last few decades... satan is now publishing his own translations geared towards muddying the waters to confuse people.
There are lots of folks that have posted comparisons between the different versions out on the net if one is interested in searching for that. On the other hand, many are departing the faith for doctrines of devils and they'll believe anything that makes them feel good.
KJV did not always depend on the original language of Hebrew, Greek or Aramaic. It is also base from the “original language of Latin, Italic, Gothic and Biblical English.
It has been said that 80-90 percent of the translation came from the English Language for the process of purification. KJ Translators did sometimes translated any Hebrew or Greek text into Latin then English for precession and accuracy. Some of the words used in the KJ Bible were transliterated Latin words. Even the word “spirit” is not the best translation of the Hebrew or Greek language.
Here are other words that need a lot of chewing on since they are not translated words of Hebrew or Greek language. They are transliterated Latin words:
Adoption, altar,assurance, beauty,Calvary, cross, crucify, damnation, divine, excel, excellent, exhort, FAITH, GRACE, honour, immortality, just, justice, JUSTIFICATION, JUSTIFY, liberty, MERCY.MIRACLE, mortify, OBEDIENCE, OBEY, offer, pardon, PRAYER, PREACHER, predestinate, PROPIATIATION, purification, reconcile, reconciliation, REDEMPTION, remission, RESSURECTION, REVEALATION, reverend, revive, sacrifice, SALVATION, SANCTIFICATION, sanctify, SAVE, SAVIOUR, separate, servant, simple, supplication, surely, tempt, temptation, TESTAMENT.