It doesn't seem that unlikely given two facts :
Wizards don't seem to know much, nor care much, about Muggle religions. Having a reference to the Bible and Jesus Christ in a tomb of wizards strikes me as very unlikely.
The Potter family is descendant of one of the Peverell brothers, inheriting the Cloak of Invisibility, a Deathly Hallow from him. That makes "The last enemy to be destroyed is death" a more likely motto for the Potter family.
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Given the timing, it seems more likely in-universe that the particular English translation of that bible passage was lifted from the wizard motto.
I am confused.
The particular Bible passage was written in Greek a solid millennia before Hogwarts was built, it was available in Latin at least since the 4th century (Latin being the language of the educated post-Roman Empire, and the language which magic seems to be based off of), and, according to a quick Wikipedia search, translated into Old English by the Venerable Bede in the 7th century.