LOL, I must be dreaming, you said, "
Big difference between 'immortal' and 'eternal'. Your definition, wherever it came from, says eternal means 'without end or beginning'. But that isn't what it says about 'immortal'.
First the dictionary, and then the bible. Dictionary. com.
Eternal:
without beginning or end; lasting forever; always existing (opposed to temporal )
Immortal: 1. not mortal; not liable or subject to death. 2. not liable to perish or decay; imperishable;
everlasting. 3. perpetual; lasting; constant.
Now that we have these definition let’s look at everlasting.
Everlasting: 1. lasting forever;
eternal: DO WE NEED TO GO ANY FURTHER? Immortal is eternal.
now, Webster Dictionary a. having infinite duration :
everlasting. B. continued without intermission

erpetual example: an eternal flame.
now the BIBLE. according to 1 Timothy 6:16, the Lord Jesus is "immortal", scripture, Hebrews 13:8 "Jesus Christ the same yesterday, and to day, and
for ever". see that "for ever? according to webster dictionary FOR ever means, for a limitless time. do you know what LIMITLESS means?
without end. if you don't trust your dictionary, just google limitless.
that's lie #2. don't let it be a third.