"Endure to the end"; another false Mormon teaching seeping into Christianity?!

Must we “endure to the end” to be saved from Hell to go to Heaven?
“For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.” (John 3:16)
https://www.azquotes.com/quote/1314580
https://thechurchofjesuschrist.org/wp-content/uploads/The-Book-Of-Mormon_TCOJC.pdf
https://www.purebiblesearch.com/
https://webstersdictionary1828.com/Dictionary/salvation
https://webstersdictionary1828.com/Dictionary/deliverance
https://www.azquotes.com/quote/856730
@ScourbyYouBible
https://www.youtube.com/@ScourbyYouBible