I suppose if you’re accustomed to it, then old English might not be too confusing. For myself, I can’t understand anything that’s going on in a Shakespeare play. There has been at least one occasion where I’ve taken the wrong interpretation from a KJV verse. I forgot the what exact verse was, though.
Isaiah 14:12 New International Version (NIV)
12 How you have fallen from heaven, morning star, son of the dawn! You have been cast down to the earth, you who once laid low the nations!
NIV: Revelation 22:16,
"I, Jesus, have sent my angel to give you [1] this testimony for the churches. I am the Root and the Offspring of David, and the bright Morning Star."
Now read these two verses in the KJV