Well I believe your memory will not be altered in this respect if you are a true believer in the Word of God. HE will not let you be deceived.
I checked with a most reliable source—my mother. Her recollection is the same as mine.
She has a hymn book that was her grandmother’s published in 1888. One hymn specifically has the verse of the lion and the lamb.
They had it wrong in 1888? She also checked another hymn book. A hymn written by a man born in 1792. With the verse being the same. He also got it wrong? Then she checked an article written by a Jewish man pertaining to Isaiah. He apparently also got the verse wrong. ?????
Deuteronomy 4:2
“Ye shall not add unto the word which I command you, neither shall ye diminish ought from it, that ye may keep the commandments of the LORD your God which I command you.”
THAT is what is most important.