Scripture quotations are taken from several different versions if the Bible.
There are many fine versions of the Bible that are faithful translations of God’s Word. While I love the King James Version, there are many others worthy of being quoted and will be designated in the same manner that they are at sites such as biblegateway.com or youversion.com. For example, HCSB refers to the Holman Christian Standard Bible, NIV New International Version, ESV English Standard Version, etc.
For what it’s worth, my favorites for literal translations include the King James and English Standard versions. For an easy read that I think is faithful to the original, my favorite dynamic version is the NIV.
The HCSB (now CSB) is somewhere in the middle, between literal and dynamic. The HCSB has been a favorite for a long time but has now (unfortunately, in my opinion) been replaced by the Christian Standard Bible (supposedly a revision of the HCSB — but lacking some features I really love and find useful).
I think the most important thing a believer can do is find a mainstream translation that they find easy to read and study it intently. Compare verses you may find difficult with the plethora of available translations today. My further suggestion is that you start with a literal translation you may like, such as the ESV, NKJV or NASB and add a more dynamic version (like the NIV) for comparison.